Optical imaging system

ABSTRACT

An optical imaging system a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5&lt;L1234TRavg/L7TR&lt;0.9, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, L7TR is an overall outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in a same unit of measurement.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 16/424,801 filed on May 29, 2019, which claims the benefit under 35 USC 119(a) of Korean Patent Application Nos. 10-2018-0061396 filed on May 29, 2018, and 10-2018-0106187 filed on Sep. 5, 2018, in the Korean Intellectual Property Office, the entire disclosures of which are incorporated herein by reference for all purposes.

BACKGROUND 1. Field

This application relates to an optical imaging system including seven lenses.

2. Description of Related Art

A mobile terminal is commonly provided with a camera for video communications or capturing images. However, it is difficult to achieve high performance in such a camera for a mobile terminal due to space limitations inside the mobile terminal.

Accordingly, a demand for an optical imaging system capable of improving the performance of the camera module increasing a size of the camera has increased as a number of mobile terminals provided with a camera has increased.

SUMMARY

This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In one general aspect, an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5<L1234TRavg/L7TR<0.9, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, L7TR is an overall outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in a same unit of measurement.

An object-side surface of the first lens may be convex.

An image-side surface of the first lens may be concave.

An image-side surface of the seventh lens may be concave.

A distance along the optical axis from an object-side surface of the first lens to the imaging plane may be 6 mm or less.

At least one inflection point may be formed on either one or both of an object-side surface and an image-side surface of the sixth lens.

At least one inflection point may be formed on either one or both of an object-side surface and an image-side surface of the seventh lens.

The optical imaging system may further satisfy 0.1<L1w/L7w<0.3, where L1w is a weight of the first lens, L7w is a weight of the seventh lens, and L1w and L7w are expressed in a same unit of measurement.

The optical imaging system may further include a spacer disposed between the sixth and seventh lenses, and the optical imaging system may further satisfy 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, f is the overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens, and L1TR and L7TR are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.5<L1234TRavg/L7TR<0.75.

The optical imaging system may further satisfy 0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, and L12345TRavg and L7TR are expressed in a same unit of measurement.

The second lens may have a positive refractive power.

The third lens may have a positive refractive power.

The fifth lens may have a negative refractive power.

A paraxial region of an object-side surface of the fifth lens may be concave or convex.

A paraxial region of an image-side surface of the fifth lens may be concave or convex.

A paraxial region of an object-side surface of the sixth lens may be concave or convex.

A paraxial region of an image-side surface of the sixth lens may be concave or convex.

A paraxial region of an object-side surface of the seventh lens may be concave or convex.

Other features and aspects will be apparent from the following detailed description, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view illustrating a first example of an optical imaging system.

FIG. 2 illustrates aberration curves of the optical imaging system of FIG. 1.

FIG. 3 is a view illustrating a second example of an optical imaging system.

FIG. 4 illustrates aberration curves of the optical imaging system of FIG. 3.

FIG. 5 is a view illustrating a third example of an optical imaging system.

FIG. 6 illustrates aberration curves of the optical imaging system of FIG. 5.

FIG. 7 is a view illustrating a fourth example of an optical imaging system.

FIG. 8 illustrates aberration curves of the optical imaging system of FIG. 7.

FIG. 9 is a view illustrating a fifth example of an optical imaging system.

FIG. 10 illustrates aberration curves of the optical imaging system of FIG. 9.

FIG. 11 is a view illustrating a sixth example of an optical imaging system.

FIG. 12 illustrates aberration curves of the optical imaging system of FIG. 11.

FIG. 13 is a view illustrating a seventh example of an optical imaging system.

FIG. 14 illustrates aberration curves of the optical imaging system of FIG. 13.

FIG. 15 is a view illustrating an eighth example of an optical imaging system.

FIG. 16 illustrates aberration curves of the optical imaging system of FIG. 15.

FIG. 17 is a view illustrating a ninth example of an optical imaging system.

FIG. 18 illustrates aberration curves of the optical imaging system of FIG. 17.

FIG. 19 is a view illustrating a tenth example of an optical imaging system.

FIG. 20 illustrates aberration curves of the optical imaging system of FIG. 19.

FIG. 21 is a view illustrating an eleventh example of an optical imaging system.

FIG. 22 illustrates aberration curves of the optical imaging system of FIG. 21.

FIG. 23 is a view illustrating a twelfth example of an optical imaging system.

FIG. 24 illustrates aberration curves of the optical imaging system of FIG. 23.

FIG. 25 is a view illustrating a thirteenth example of an optical imaging system.

FIG. 26 illustrates aberration curves of the optical imaging system of FIG. 25.

FIG. 27 is a view illustrating a fourteenth example of an optical imaging system.

FIG. 28 illustrates aberration curves of the optical imaging system of FIG. 27.

FIG. 29 is a view illustrating a fifteenth example of an optical imaging system.

FIG. 30 illustrates aberration curves of the optical imaging system of FIG. 29.

FIG. 31 is a view illustrating a sixteenth example of an optical imaging system.

FIG. 32 illustrates aberration curves of the optical imaging system of FIG. 31.

FIG. 33 is a view illustrating a seventeenth example of an optical imaging system.

FIG. 34 illustrates aberration curves of the optical imaging system of FIG. 33.

FIG. 35 is a view illustrating an eighteenth example of an optical imaging system.

FIG. 36 illustrates aberration curves of the optical imaging system of FIG. 35.

FIG. 37 is a view illustrating a nineteenth example of an optical imaging system.

FIG. 38 illustrates aberration curves of the optical imaging system of FIG. 37.

FIG. 39 is a view illustrating a twentieth example of an optical imaging system.

FIG. 40 illustrates aberration curves of the optical imaging system of FIG. 39.

FIG. 41 is a view illustrating a twenty-first example of an optical imaging system.

FIG. 42 illustrates aberration curves of the optical imaging system of FIG. 41.

FIG. 43 is a view illustrating a twenty-second example of an optical imaging system.

FIG. 44 illustrates aberration curves of the optical imaging system of FIG. 43.

FIG. 45 is a view illustrating a twenty-third example of an optical imaging system.

FIG. 46 illustrates aberration curves of the optical imaging system of FIG. 45.

FIG. 47 is a view illustrating a twenty-fourth example of an optical imaging system.

FIG. 48 illustrates aberration curves of the optical imaging system of FIG. 47.

FIG. 49 is a view illustrating a twenty-fifth example of an optical imaging system.

FIG. 50 illustrates aberration curves of the optical imaging system of FIG. 49.

FIG. 51 is a view illustrating a twenty-sixth example of an optical imaging system.

FIG. 52 illustrates aberration curves of the optical imaging system of FIG. 51.

FIG. 53 is a view illustrating a twenty-seventh example of an optical imaging system.

FIG. 54 illustrates aberration curves of the optical imaging system of FIG. 53.

FIG. 55 is a view illustrating a twenty-eighth example of an optical imaging system.

FIG. 56 illustrates aberration curves of the optical imaging system of FIG. 55.

FIG. 57 is a view illustrating a twenty-ninth example of an optical imaging system.

FIG. 58 illustrates aberration curves of the optical imaging system of FIG. 57.

FIGS. 59 and 60 are cross-sectional views illustrating examples of an optical imaging system and a lens barrel coupled to each other.

FIG. 61 is cross-sectional view illustrating an example of a seventh lens.

FIG. 62 is a cross-sectional view illustrating an example of a shape of a rib of a lens.

Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the disclosure of this application. For example, the sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed as will be apparent after an understanding of the disclosure of this application, with the exception of operations necessarily occurring in a certain order. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness.

The features described herein may be embodied in different forms, and are not to be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways of implementing the methods, apparatuses, and/or systems described herein that will be apparent after an understanding of the disclosure of this application.

Throughout the specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element, or there may be one or more other elements intervening therebetween. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there can be no other elements intervening therebetween.

As used herein, the term “and/or” includes any one and any combination of any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used herein to describe various members, components, regions, layers, or sections, these members, components, regions, layers, or sections are not to be limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or section from another member, component, region, layer, or section. Thus, a first member, component, region, layer, or section referred to in examples described herein may also be referred to as a second member, component, region, layer, or section without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower” may be used herein for ease of description to describe one element's relationship to another element as shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above” or “upper” relative to another element will then be “below” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may also be oriented in other ways (for example, rotated by 90 degrees or at other orientations), and the spatially relative terms used herein are to be interpreted accordingly.

The terminology used herein is for describing various examples only, and is not to be used to limit the disclosure. The articles “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “includes,” and “has” specify the presence of stated features, numbers, operations, members, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, members, elements, and/or combinations thereof.

Thicknesses, sizes, and shapes of lenses illustrated in the drawings may have been slightly exaggerated for convenience of explanation. In addition, the shapes of spherical surfaces or aspherical surfaces of the lenses described in the detailed description and illustrated in the drawings are merely examples. That is, the shapes of the spherical surfaces or the aspherical surfaces of the lenses are not limited to the examples described herein.

Numerical values of radii of curvature, thicknesses of lenses, distances between elements including lenses or surfaces, effective aperture radii of lenses, focal lengths, and diameters, thicknesses, and lengths of various elements are expressed in millimeters (mm), and angles are expressed in degrees. Thicknesses of lenses and distances between elements including lenses or surfaces are measured along the optical axis of the optical imaging system.

The term “effective aperture radius” as used in this application refers to a radius of a portion of a surface of a lens or other element (an object-side surface or an image-side surface of a lens or other element) through which light actually passes. The effective aperture radius is equal to a distance measured perpendicular to an optical axis of the surface between the optical axis of the surface and the outermost point on the surface through which light actually passes. Therefore, the effective aperture radius may be equal to a radius of an optical portion of a surface, or may be smaller than the radius of the optical portion of the surface if light does not pass through a peripheral portion of the optical portion of the surface. The object-side surface and the image-side surface of a lens or other element may have different effective aperture radii.

In this application, unless stated otherwise, a reference to the shape of a lens surface means the shape of a paraxial region of the lens surface. A paraxial region of a lens surface is a central portion of the lens surface surrounding the optical axis of the lens surface in which light rays incident to the lens surface make a small angle θ to the optical axis and the approximations sin θ≈θ, tan θ≈θ, and cos θ≈1 are valid.

For example, a statement that the object-side surface of a lens is convex means that at least a paraxial region of the object-side surface of the lens is convex, and a statement that the image-side surface of the lens is concave means that at least a paraxial region of the image-side surface of the lens is concave. Therefore, even though the object side-surface of the lens may be described as being convex, the entire object-side surface of the lens may not be convex, and a peripheral region of the object-side surface of the lens may be concave. Also, even though the image-side surface of the lens may be described as being concave, the entire image-side surface of the lens may not be concave, and a peripheral region of the image-side surface of the lens may be convex.

An optical imaging system includes a plurality of lenses. For example, the optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system. Thus, the first lens is a lens closest to an object (or a subject) to be imaged by the optical imaging system, while the seventh lens is a lens closest to the imaging plane.

Each lens of the optical imaging system includes an optical portion and a rib. The optical portion of the lens is a portion of the lens that is configured to refract light, and is generally formed in a central portion of the lens. The rib of the lens is an edge portion of the lens that enables the lens to be mounted in a lens barrel and the optical axis of the lens to be aligned with the optical axis of the optical imaging system. The rib of the lens extends radially outward from the optical portion. The optical portions of the lenses are generally not in contact with each other. For example, the first to seventh lenses are mounted in the lens barrel so that they are spaced apart from one another by predetermined distances along the optical axis of the optical imaging system. The ribs of the lenses may be in selective contact with each other. For example, the ribs of the first to fourth lenses, or the first fifth lenses, or the second to fourth lenses, may be in contact with each other so that the optical axes of these lenses may be easily aligned with the optical axis of the optical imaging system.

Next, a configuration of the optical imaging system will be described.

The optical imaging system includes a plurality of lenses. For example, the optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system.

The optical imaging system further includes an image sensor and a filter. The image sensor forms an imaging plane, and converts light refracted by the first to seventh lenses into an electric signal. The filter is disposed between the seventh lens and the imaging plane, and blocks infrared rays in the light refracted by the first to seventh lenses from being incident on the imaging plane.

The optical imaging system further includes a stop and spacers. The stop may be disposed in front of the first lens, or at a position of either an object-side surface or an image side-surface of one of the first to seventh lenses, or between two adjacent lenses of the first to seventh lenses, or between the object-side surface and the image-side surface of one of the first to seventh lenses, to adjust the amount of light incident on the imaging plane. Some examples may include two stops, one of which may be disposed in front of the first lens, or at the position of the object-side surface of the first lens, or between the object-side surface and the image-side surface of the first lens. Each of the spacers is disposed at a respective position between two lenses of the first to seventh lenses to maintain a predetermined distance between the two lenses. In addition, the spacers may be made of a light-shielding material to block extraneous light penetrating into the ribs of the lenses. There may be six or seven spacers. For example, a first spacer is disposed between the first lens and the second lens, a second spacer is disposed between the second lens and the third lens, a third spacer is disposed between the third lens and the fourth lens, a fourth spacer is disposed between the fourth lens and the fifth lens, a fifth spacer is disposed between the fifth lens and the sixth lens, and a sixth spacer is disposed between the sixth lens and the seventh lens. In addition, the optical imaging system may further include a seventh spacer disposed between the sixth lens and the sixth spacer.

Next, the lenses of the optical imaging system will be described.

The first lens has a refractive power. For example, the first lens has a positive refractive power or a negative refractive power. One surface of the first lens may be convex. For example, an object-side surface of the first lens may be convex. One surface of the first lens may be concave. For example, an image-side surface of the first lens may be concave. The first lens may have an aspherical surface. For example, one surface or both surfaces of the first lens may be aspherical.

The second lens has a refractive power. For example, the second lens has a positive refractive power or a negative refractive power. At least one surface of the second lens may be convex. For example, an object-side surface of the second lens may be convex, or both the object-side surface and an image-side surface of the second lens may be convex. At least one surface of the second lens may be concave. For example, the image-side surface of the second lens may be concave, or both the object-side surface and the image-side surface of the second lens may be concave. The second lens may have an aspherical surface. For example, one surface or both surfaces of the second lens may be aspherical.

The third lens has a refractive power. For example, the third lens has a positive refractive power or a negative refractive power. One surface of the third lens may be convex. For example, an object-side surface or an image-side surface of the third lens may be convex. One surface of the third lens may be concave. For example, the object-side surface or the image-side surface of the third lens may be concave. The third lens may have an aspherical surface. For example, one surface or both surfaces of the third lens may be aspherical.

The fourth lens has a refractive power. For example, the fourth lens has a positive refractive power or a negative refractive power. At least one surface of the fourth lens may be convex. For example, an object-side surface or an image-side surface of the fourth lens may be convex, or both the object-side surface and the image-side surface of the fourth lens may be convex. One surface of the fourth lens may be concave. For example, the object-side surface or the image-side surface of the fourth lens may be concave. The fourth lens may have an aspherical surface. For example, one surface or both surfaces of the fourth lens may be aspherical.

The fifth lens has a refractive power. For example, the fifth lens has a positive refractive power or a negative refractive power. One surface of the fifth lens may be convex. For example, an object-side surface or an image-side surface of the fifth lens may be convex. One surface of the fifth lens may be concave. For example, the object-side surface or the image-side surface of the fifth lens may be concave. The fifth lens may have an aspherical surface. For example, one surface or both surfaces of the fifth lens may be aspherical.

The sixth lens has a refractive power. For example, the sixth lens has a positive refractive power or a negative refractive power. At least one surface of the sixth lens may be convex. For example, an object-side surface or an image side surface of the sixth lens may be convex, or both the object-side surface and the image-side surface of the sixth lens may be convex. At least one surface of the sixth lens may be concave. For example, the object-side surface or the image-side surface of the sixth lens may be concave, or both the object-side surface and the image-side surface of the sixth lens may be concave. At least one surface of the sixth lens may have at least one inflection point. An inflection point is a point where a lens surface changes from convex to concave, or from concave to convex. A number of inflection points is counted from a center of the lens to an outer edge of the optical portion of the lens. For example, at least one inflection point may be formed on either one or both of the object-side surface and the image-side surface of the sixth lens. Therefore, at least one surface of the sixth lens may have a paraxial region and a peripheral region having shapes that are different from each other. For example, a paraxial region of the image-side surface of the sixth lens may be concave, but a peripheral portion thereof may be convex. The sixth lens may have an aspherical surface. For example, one surface or both surfaces of the sixth lens may be aspherical.

The seventh lens has a refractive power. For example, the seventh lens has a positive refractive power or a negative refractive power. One surface of the seventh lens may be convex. For example, an object-side surface of the seventh lens may be convex. At least one surface of the seventh lens may be concave. For example, an image-side surface of the seventh lens may be concave, or both the object-side surface and the image-side surface of the seventh lens may be concave. At least one surface of the seventh lens may have at least one inflection point. For example, at least one inflection point may be formed on either one or both of the object-side surface and the image-side surface of the seventh lens. Therefore, at least one surface of the seventh lens may have a paraxial region and a peripheral region having shapes that are different from each other. For example, a paraxial region of the image-side surface of the seventh lens may be concave, but a peripheral region thereof may be convex. The seventh lens may have an aspherical surface. For example, one surface or both surfaces of the seventh lens may be aspherical.

The lenses of the optical imaging system may be made of a light material having a high light transmittance. For example, the first to seventh lenses may be made of a plastic material. However, a material of the first to seventh lenses is not limited to the plastic material.

The aspherical surfaces of the first to seventh lenses may be represented by the following Equation 1:

$\begin{matrix} {Z = {\frac{{cY}^{2}}{1 + \sqrt{1 - {\left( {1 + K} \right)c^{2}Y^{2}}}} + {AY}^{4} + {BY}^{6} + {CY}^{8} + {DY}^{10} + {EY}^{12} + {FY}^{14} + {GY}^{18} + {HY}^{18} + \ldots}} & (1) \end{matrix}$

In Equation 1, c is a curvature of a lens surface and is equal to an inverse of a radius of curvature of the lens surface at an optical axis of the lens surface, K is a conic constant, Y is a distance from a certain point on an aspherical surface of the lens to an optical axis of the lens in a direction perpendicular to the optical axis, A to H are aspherical constants, Z (or sag) is a distance between the certain point on the aspherical surface of the lens at the distance Y to the optical axis and a tangential plane perpendicular to the optical axis meeting the apex of the aspherical surface of the lens. Some of the examples disclosed in this application include an aspherical constant J. An additional term of JY²⁰ may be added to the right side of Equation 1 to reflect the effect of the aspherical constant J.

The optical imaging system may satisfy one or more of the following Conditional Expressions 1 to 5:

0.1<L1w/L7w<0.4  (Conditional Expression 1)

0.5<S6d/f<1.4  (Conditional Expression 2)

0.4<L1TR/L7TR<0.8  (Conditional Expression 3)

0.5<L1234TRavg/L7TR<0.9  (Conditional Expression 4)

0.5<L12345TRavg/L7TR<0.9  (Conditional Expression 5)

In the above Conditional Expressions, L1w is a weight of the first lens, and L7w is a weight of the seventh lens.

S6d is an inner diameter of the sixth spacer, and f is an overall focal length of the optical imaging system.

L1TR is an overall outer diameter of the first lens, and L7TR is an overall outer diameter of the seventh lens. The overall outer diameter of a lens is a diameter of the lens including both the optical portion of the lens and the rib of the lens.

L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, and L12345TRavg is an average value of overall outer diameters of the first to fifth lenses.

Conditional Expressions 1 and 3 specify ranges of a weight ratio and an overall outer diameter ratio between the first lens and the seventh lens to facilitate a self-alignment between the lenses and an alignment by the lens barrel.

Conditional Expression 2 specifies a range of a ratio of the inner diameter of the sixth spacer to the overall focal length of the optical imaging system to minimize a flare phenomenon.

Conditional Expressions 4 and 5 specify overall outer diameter ratios between the lenses to facilitate aberration correction.

The optical imaging system may also satisfy one or more of the following Conditional Expressions 6 to 10:

0.1<L1w/L7w<0.3  (Conditional Expression 6)

0.5<S6d/f<1.2  (Conditional Expression 7)

0.4<L1TR/L7TR<0.7  (Conditional Expression 8)

0.5<L1234TRavg/L7TR<0.75  (Conditional Expression 9)

0.5<L12345TRavg/L7TR<0.76  (Conditional Expression 10)

Conditional Expressions 6 to 10 are the same as Conditional Expressions 1 to 5, except that Conditional Expressions 6 to 10 specify narrower ranges.

The optical imaging system may also satisfy one or more of the following Conditional Expressions 11 to 31:

0.01<R1/R4<1.3  (Conditional Expression 11)

0.1<R1/R5<0.7  (Conditional Expression 12)

0.05<R1/R6<0.9  (Conditional Expression 13)

0.2<R1/R11<1.2  (Conditional Expression 14)

0.8<R1/R14<1.2  (Conditional Expression 15)

0.6<(R11+R14)/(2*R1)<3.0  (Conditional Expression 16)

0.4<D13/D57<1.2  (Conditional Expression 17)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8  (Conditional Expression 18)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0  (Conditional Expression 19)

0.2<TD1/D67<0.8  (Conditional Expression 20)

0.1<(R11+R14)/(R5+R6)<1.0  (Conditional Expression 21)

SD12<SD34  (Conditional Expression 22)

SD56<SD67  (Conditional Expression 23)

SD56<SD34  (Conditional Expression 24)

0.6<TTL/(2*(IMG HT))<0.9  (Conditional Expression 25)

0.2<ΣSD/ΣTD<0.7  (Conditional Expression 26)

0<min(f1:f3)/max(f4:f7)<0.4  (Conditional Expression 27)

0.4<(ΣTD)/TTL<0.7  (Conditional Expression 28)

0.7<SL/TTL<1.0  (Conditional Expression 29)

0.81<f12/f123<0.96  (Conditional Expression 30)

0.6<f12/f1234<0.84  (Conditional Expression 31)

In the above Conditional Expressions, R1 is a radius of curvature of an object-side surface of the first lens, R4 is a radius of curvature of an image-side surface of the second lens, R5 is a radius of curvature of an object-side surface of the third lens, R6 is a radius of curvature of an image-side surface of the third lens, R11 is a radius of curvature of an object-side surface of the sixth lens, and R14 is a radius of curvature of an image-side surface of the seventh lens.

D13 is a distance along an optical axis of the optical imaging system from the object-side surface of the first lens to the image-side surface of the third lens, and D57 is a distance along the optical axis from an object-side surface of the fifth lens to the image-side surface of the seventh lens.

f1 is a focal length of the first lens, f2 is a focal length of the second lens, f3 is a focal length of the third lens, f4 is a focal length of the fourth lens, f5 is a focal length of the fifth lens, f6 is a focal length of the sixth lens, f7 is a focal length of the seventh lens, f is an overall focal length of the optical imaging system, and TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of an image sensor of the optical imaging system.

TD1 is a thickness along the optical axis of the first lens, and D67 is a distance along the optical axis from the object-side surface of the sixth lens to the image-side surface of the seventh lens.

SD12 is a distance along the optical axis from an image-side surface of the first lens to an object-side surface of the second lens, SD34 is a distance along the optical axis from the image-side surface of the third lens to an object-side surface of the fourth lens, SD56 is a distance along the optical axis from an image-side surface of the fifth lens to the object-side surface of the sixth lens, and SD67 is a distance along the optical axis from an image-side surface of the sixth lens to an object-side surface of the seventh lens.

IMG HT is one-half of a diagonal length of the imaging plane of the image sensor.

ΣSD is a sum of air gaps along the optical axis between the first to seventh lenses, and ΣTD is a sum of thicknesses along the optical axis of the first to seventh lenses. An air gap is a distance along the optical axis between adjacent ones of the first to seventh lenses.

min(f1:f3) is a minimum value of absolute values of the focal lengths of the first to third lenses, and max(f4:f7) is a maximum value of absolute values of the focal lengths of the fourth to seventh lenses.

SL is a distance along the optical axis from the stop to the imaging plane of the image sensor.

f12 is a composite focal length of the first and second lenses, f123 is a composite focal length of the first to third lenses, and f1234 is a composite focal length of the first to fourth lenses.

Conditional Expression 11 specifies a design range of the second lens for minimizing aberration caused by the first lens. For example, it is difficult to expect a sufficient correction of longitudinal spherical aberration for the second lens having a radius of curvature that exceeds the upper limit value of Conditional Expression 11, and it is difficult to expect a sufficient correction of astigmatic field curves for the second lens having a radius of curvature that is below the lower limit value of Conditional Expression 11.

Conditional Expressions 12 and 13 specify a design range of the third lens for minimizing aberration caused by the first lens. For example, it is difficult to expect a sufficient correction of longitudinal spherical aberration for the third lens having a radius of curvature that exceeds the upper limit value of Conditional Expression 12 or 13, and it is difficult to expect a sufficient correction of astigmatic field curves for the third lens having a radius of curvature that is below the lower limit value of Conditional Expression 12 or 13.

Conditional Expression 14 specifies a design range of the sixth lens for minimizing aberration caused by the first lens. For example, it is difficult to expect a sufficient correction of longitudinal spherical aberration for the sixth lens having a radius of curvature that exceeds the upper limit value of Conditional Expression 14, and the sixth lens having a radius of curvature that is below the lower limit value of Conditional Expression 14 is apt to cause a flare phenomenon.

Conditional Expression 15 specifies a design range of the seventh lens for minimizing the aberration caused by the first lens. For example, it is difficult to expect a sufficient correction of longitudinal spherical aberration for the seventh lens having a radius of curvature that exceeds the upper limit value of Conditional Expression 15, and the seventh lens having a radius of curvature that is below the lower limit value of Conditional Expression 15 is apt to cause an imaging plane curvature.

Conditional Expression 16 specifies a ratio of a sum of radii of curvature of the sixth lens and the seventh lens to twice a radius of curvature of the first lens for correcting the longitudinal spherical aberration and achieving excellent optical performance.

Conditional Expression 17 specifies a ratio of the optical imaging system mountable in a compact terminal. For example, an optical imaging system having a ratio that exceeds the upper limit value of Conditional Expression 17 may cause a problem that the total length of the optical imaging system becomes long, and an optical imaging system having a ratio that is below the lower limit value of Conditional Expression 17 may cause a problem that a lateral cross-section of the optical imaging system becomes large.

Conditional Expressions 18 and 19 specify a refractive power ratio of the first to seventh lenses for facilitating mass production of the optical imaging system. For example, an optical imaging system having a refractive power ratio that exceeds the upper limit value of Conditional Expression 18 or 19 or is below the lower limit value of Conditional Expression 18 or 19 is difficult to commercialize because the refractive power of one or more of the first to seventh lenses is too great.

Conditional Expression 20 specifies a thickness range of the first lens for implementing a compact optical imaging system. For example, the first lens having a thickness that exceeds the upper value of Conditional Expression 20 or is below the lower limit value of Conditional Expression 20 is too thick or too thin to be manufactured.

Conditional Expression 22 specifies a design condition of the first to fourth lenses for improving chromatic aberration. For example, a case in which a distance between the first lens and the second lens is shorter than a distance between the third lens and the fourth lens is advantageous for improving the chromatic aberration.

Conditional Expressions 25 to 28 specify design conditions for implementing a compact optical imaging system. For example, lenses that deviate from the numerical range of Conditional Expression 26 or 28 are difficult to form by injection molding and process.

Conditional Expressions 29 to 31 specify design conditions of the optical imaging system in consideration of a position of the stop. For example, an optical imaging system that does not satisfy one or more of Conditional Expressions 29 to 31 may have a longer overall length due to the refractive power of the lenses disposed behind the stop.

Next, various examples of the optical imaging system will be described. In the tables that appear in the following examples, S1 denotes the object-side surface of the first lens, S2 denotes an image-side surface of the first lens, S3 denotes an object-side surface of a second lens, S4 denotes an image-side surface of the second lens, S5 denotes an object-side surface of a third lens, S6 denotes an image-side surface of the third lens, S7 denotes an object-side surface of a fourth lens, S8 denotes an image-side surface of the fourth lens, S9 denotes an object-side surface of a fifth lens, S10 denotes an image-side surface of the fifth lens, S11 denotes an object-side surface of a sixth lens, S12 denotes an image-side surface of the sixth lens, S13 denotes an object-side surface of a seventh lens, S14 denotes an image-side surface of the seventh lens, S15 denotes an object-side surface of a filter, S16 denotes an image-side surface of the filter, and S17 denotes an imaging plane.

First Example

FIG. 1 is a view illustrating a first example of an optical imaging system, and FIG. 2 illustrates aberration curves of the optical imaging system of FIG. 1.

An optical imaging system 1 includes a first lens 1001, a second lens 2001, a third lens 3001, a fourth lens 4001, a fifth lens 5001, a sixth lens 6001, and a seventh lens 7001.

The first lens 1001 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2001 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3001 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4001 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5001 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6001 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6001. The seventh lens 7001 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7001.

The optical imaging system 1 further includes a stop, a filter 8001, and an image sensor 9001. The stop is disposed between the first lens 1001 and the second lens 2001 to adjust an amount of light incident onto the image sensor 9001. The filter 8001 is disposed between the seventh lens 7001 and the image sensor 9001 to block infrared rays. The image sensor 9001 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 1, the stop is disposed at a distance of 0.818 mm from the object-side surface of the first lens 1001 toward the imaging plane of the optical imaging system 1. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 1 listed in Table 59 that appears later in this application.

Table 1 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 1, and Table 2 below shows aspherical coefficients of the lenses of FIG. 1.

TABLE 1 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.7727 0.8181 1.546 56.114 1.380 S2 (Stop) Lens 7.4351 0.0796 1.328 S3 Second 5.0469 0.2000 1.669 20.353 1.249 S4 Lens 2.9477 0.3758 1.101 S5 Third 12.3816 0.4066 1.546 56.114 1.126 S6 Lens 25.2119 0.1314 1.230 S7 Fourth 5.6841 0.2190 1.669 20.353 1.248 S8 Lens 4.4062 0.1513 1.414 S9 Fifth 27.7177 0.3054 1.644 23.516 1.474 S10 Lens 8.0565 0.2193 1.706 S11 Sixth 4.7687 0.6347 1.546 56.114 1.930 S12 Lens −1.5557 0.3548 2.155 S13 Seventh −2.2362 0.3735 1.546 56.114 2.750 S14 Lens 2.3510 0.1949 2.957 S15 Filter Infinity 0.2100 1.519 64.197 3.305 S16 Infinity 0.6005 3.373 S17 Imaging Infinity 0.0152 3.697 Plane

TABLE 2 K A B C D E F G H J S1 −1.0302 0.0182 0.0322 −0.072 0.1129 −0.1074 0.0607 −0.0187 0.0023 0 S2 9.4302 −0.101 0.1415 −0.1169 0.0389 0.0135 −0.0204 0.0086 −0.0013 0 S3 0 0 0 0 0 0 0 0 0 0 S4 −0.5054 −0.107 0.153 0.0098 −0.2968 0.4771 −0.3575 0.1295 −0.0146 0 S5 0 −0.0525 0.0235 −0.1143 0.214 −0.2648 0.1771 −0.0552 0.0055 0 S6 −99 −0.1114 0.0792 −0.2021 0.2673 −0.1852 0.0195 0.0443 −0.0169 0 S7 0 −0.2008 0.1406 −0.378 0.4531 −0.181 −0.098 0.1117 −0.0281 0 S8 0 −0.2058 0.305 −0.5999 0.7319 −0.5351 0.226 −0.0525 0.0056 0 S9 0 −0.2836 0.4674 −0.4717 0.281 −0.0742 −0.0163 0.0146 −0.0024 0 S10 2.8626 −0.3169 0.3012 −0.217 0.1252 −0.0559 0.0174 −0.0033 0.0003 0 S11 −19.534 −0.0721 −0.0068 0.001 0.0098 −0.009 0.003 −0.0004 8E-06 0 S12 −1.1368 0.1733 −0.17 0.0787 −0.017 0.001 0.0003 −8E-05 5E-06 0 S13 −13.433 −0.0852 −0.045 0.0567 −0.0213 0.0042 −0.0005   3E-05 −8E-07   0 S14 −0.6859 −0.1597 0.0728 −0.0275 0.0078 −0.0016 0.0002 −2E-05 1E-06 −3.04E-08

Second Example

FIG. 3 is a view illustrating a second example of an optical imaging system, and FIG. 4 illustrates aberration curves of the optical imaging system of FIG. 3.

An optical imaging system 2 includes a first lens 1002, a second lens 2002, a third lens 3002, a fourth lens 4002, a fifth lens 5002, a sixth lens 6002, and a seventh lens 7002.

The first lens 1002 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2002 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3002 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4002 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5002 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6002 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6002. The seventh lens 7002 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7002.

The optical imaging system 2 further includes a stop, a filter 8002, and an image sensor 9002. The stop is disposed between the first lens 1002 and the second lens 2002 to adjust an amount of light incident onto the image sensor 9002. The filter 8002 is disposed between the seventh lens 7002 and the image sensor 9002 to block infrared rays. The image sensor 9002 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 3, the stop is disposed at a distance of 0.819 mm from the object-side surface of the first lens 1002 toward the imaging plane of the optical imaging system 2. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 2 listed in Table 59 that appears later in this application.

Table 3 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 3, and Table 4 below shows aspherical coefficients of the lenses of FIG. 3.

TABLE 3 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.8214 0.8197 1.546 56.114 1.385 S2 (Stop) Lens 7.7893 0.1087 1.326 S3 Second 5.1719 0.2010 1.669 20.353 1.239 S4 Lens 2.9302 0.3476 1.105 S5 Third 13.2903 0.4297 1.546 56.114 1.131 S6 Lens 94.8027 0.1154 1.246 S7 Fourth 6.2028 0.2300 1.669 20.353 1.265 S8 Lens 5.5654 0.2565 1.406 S9 Fifth 62.0697 0.2968 1.644 23.516 1.511 S10 Lens 6.5524 0.2081 1.730 S11 Sixth 3.6488 0.6096 1.546 56.114 1.899 S12 Lens −2.0249 0.4369 2.137 S13 Seventh −2.5868 0.3500 1.546 56.114 2.814 S14 Lens 2.4492 0.1000 2.919 S15 Filter Infinity 0.1100 1.519 64.197 3.199 S16 Infinity 0.6678 3.229 S17 Imaging Infinity 0.0125 3.554 Plane

TABLE 4 K A B C D E F G H J S1 −1.0874 0.0187 0.0233 −0.0517 0.0813 -0.0771 0.0432 -0.0131 0.0016 0 S2 11.207 −0.0709 0.0738 −0.0447 −0.0034 0.0253 −0.0199 0.0073 −0.0011 0 S3 0 0 0 0 0 0 0 0 0 0 S4 −1.7159 -0.1013 0.1283 −0.0099 −0.1404 0.2054 −0.1306 0.0362 −0.0005 0 S5 0 −0.0351 0.0048 −0.0722 0.1328 −0.1508 0.0837 −0.0151 −0.0012 0 S6 −99 -0.0907 0.0028 0.0075 −0.057 0.1124 −0.1283 0.0764 −0.0179 0 S7 0 −0.1848 0.0969 −0.4021 0.8416 −0.9593 0.6237 −0.2186 0.0322 0 S8 0 −0.1431 0.1435 −0.4108 0.6792 −0.6541 0.3692 −0.1151 0.0155 0 S9 0 −0.1884 0.2972 −0.3652 0.3066 −0.1803 0.0694 −0.0165 0.0019 0 S10 3.6183 −0.2804 0.2545 −0.2142 0.1489 −0.0761 0.0249 −0.0045 0.0003 0 S11 −19.534 −0.034 −0.0509 0.0367 −0.0233 0.0117 −0.004 0.0008 −7E-05 0 S12 −0.8103 0.148 −0.1502 0.0738 −0.0262 0.0082 −0.0018 0.0002 −1E-05 0 S13 −17.021 −0.1404 0.0048 0.0311 −0.0133 0.0027 −0.0003   2E-05 −4E-07 0 S14 −0.6481 −0.1705 0.0806 −0.0297 0.0082 −0.0017 0.0002 −2E-05   1E-06 −3E-08

Third Example

FIG. 5 is a view illustrating a third example of an optical imaging system, and FIG. 6 illustrates aberration curves of the optical imaging system of FIG. 5.

An optical imaging system 3 includes a first lens 1003, a second lens 2003, a third lens 3003, a fourth lens 4003, a fifth lens 5003, a sixth lens 6003, and a seventh lens 7003.

The first lens 1003 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2003 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3003 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4003 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The fifth lens 5003 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6003 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6003. The seventh lens 7003 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7003, and one inflection point is formed on the image-side surface of the seventh lens 7003.

The optical imaging system 3 further includes a stop, a filter 8003, and an image sensor 9003. The stop is disposed between the first lens 1003 and the second lens 2003 to adjust an amount of light incident onto the image sensor 9003. The filter 8003 is disposed between the seventh lens 7003 and the image sensor 9003 to block infrared rays. The image sensor 9003 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 5, the stop is disposed at a distance of 1.269 mm from the object-side surface of the first lens 1003 toward the imaging plane of the optical imaging system 3. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 3 listed in Table 59 that appears later in this application.

Table 5 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 5, and Table 6 below shows aspherical coefficients of the lenses of FIG. 5.

TABLE 5 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 2.1102 0.4834 1.546 56.114 1.399 S2 Lens 3.4162 0.1350 1.350 S3 Second 3.0558 0.6301 1.546 56.114 1.315 S4 Lens −15.1552 0.0200 1.271 S5 (Stop) Third 4.5780 0.2000 1.679 19.236 1.157 S6 Lens 2.2551 0.5241 1.095 S7 Fourth −1287.3355 0.3030 1.679 19.236 1.250 S8 Lens −1287.3355 0.1843 1.425 S9 Fifth 3.2433 0.2905 1.546 56.114 1.646 S10 Lens 3.4026 0.2823 1.942 S11 Sixth 3.4280 0.3922 1.679 19.236 2.150 S12 Lens 2.7145 0.1579 2.500 S13 Seventh 1.5516 0.5459 1.537 53.955 2.761 S14 Lens 1.3918 0.2466 2.950 S15 Filter Infinity 0.1100 1.519 64.166 3.302 S16 Infinity 0.6790 3.337 S17 Imaging Infinity 0.0051 3.713 Plane

TABLE 6 K A B C D E F G H J S1 −7.5196 0.0675 −0.0698 0.0244 −0.0005 −0.0217 0.0206 −0.0071 0.0008 0 S2 −19.661 −0.0151 −0.0861 0.0413 0.0298 −0.039 0.0177 −0.0036 0.0002 0 S3 0.042 −0.0353 −0.035 0.0213 0.0118 0.039 −0.0637 0.0319 −0.0057 0 S4 0 0.0138 -0.0906 0.077 0.0651 −0.1861 0.1549 −0.0588 0.0085 0 S5 −5.6502 −0.0674 0.0271 −0.09 0.3133 −0.4772 0.3722 −0.1445 0.0223 0 S6 0.5327 −0.095 0.1043 −0.1591 0.2628 −0.3071 0.2264 −0.0923 0.017 0 S7 0 −0.0225 −0.0148 −0.069 0.2153 −0.2647 0.159 −0.0441 0.0038 0 S8 0 −0.014 −0.0765 0.0175 0.0813 -0.0977 0.0453 −0.0076 0 0 S9 −44.395 0.1485 −0.2238 0.1807 −0.1245 0.0673 −0.0262 0.0059 −0.0005 0 S10 −4.0715 −0.0248 0.0377 −0.0832 0.0717 −0.036 0.0107 −0.0017 0.0001 0 S11 −1.1211 0.0048 −0.1328 0.1439 −0.1087 0.0484 −0.0119 0.0015 −8E-05 0 S12 0.0464 −0.1304 0.0607 −0.038 0.0125 −0.0018 4E-05   2E-05 −2E-06 0 S13 −0.795 −0.4234 0.1968 −0.0585 0.0131 −0.0023 0.0003 −3E-05   2E-06 −4E-08 S14 −1.3233 −0.2821 0.1513 −0.0644 0.0208 −0.0048 0.0007 −7E-05   4E-06 −8E-08

Fourth Example

FIG. 7 is a view illustrating a fourth example of an optical imaging system, and FIG. 8 illustrates aberration curves of the optical imaging system of FIG. 7.

An optical imaging system 4 includes a first lens 1004, a second lens 2004, a third lens 3004, a fourth lens 4004, a fifth lens 5004, a sixth lens 6004, and a seventh lens 7004.

The first lens 1004 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2004 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3004 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4004 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The fifth lens 5004 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6004 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6004. The seventh lens 7004 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7004, and one inflection point is formed on the image-side surface of the seventh lens 7004.

The optical imaging system 4 further includes a stop, a filter 8004, and an image sensor 9004. The stop is disposed between the first lens 1004 and the second lens 2004 to adjust an amount of light incident onto the image sensor 9004. The filter 8004 is disposed between the seventh lens 7004 and the image sensor 9004 to block infrared rays. The image sensor 9004 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 7, the stop is disposed at a distance of 1.259 mm from the object-side surface of the first lens 1004 toward the imaging plane of the optical imaging system 4. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 4 listed in Table 59 that appears later in this application.

Table 7 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 7, and Table 8 below shows aspherical coefficients of the lenses of FIG. 7.

TABLE 7 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 2.1022 0.4835 1.546 56.114 1.408 S2 Lens 3.3563 0.1357 1.350 S3 Second 3.0907 0.6198 1.546 56.114 1.308 S4 Lens -13.9876 0.0200 1.271 S5 (Stop) Third 4.8553 0.2000 1.679 19.236 1.157 S6 Lens 2.3669 0.5599 1.095 S7 Fourth -2272.1286 0.3012 1.679 19.236 1.270 S8 Lens -7278.4262 0.1848 1.442 S9 Fifth 3.3546 0.2946 1.546 56.114 1.646 S10 Lens 3.5201 0.2604 1.947 S11 Sixth 3.4723 0.3932 1.679 19.236 2.150 S12 Lens 2.7354 0.1549 2.500 S13 Seventh 1.5570 0.5518 1.537 53.955 2.749 S14 Lens 1.3661 0.2501 2.950 S15 Filter Infinity 0.1100 1.519 64.166 3.293 S16 Infinity 0.6646 3.328 S17 Imaging Infinity 0.0054 3.699 Plane

TABLE 8 K A B C D E F G H J S1 −7.5279 0.0685 −0.0723 0.0313 −0.0131 −0.0097 0.0144 −0.0054 0.0007 0 S2 −19.893 −0.0114 −0.0921 0.0405 0.0318 −0.0345 0.0116 −0.001 −0.0002 0 S3 −0.0142 −0.0359 −0.0288 −0.0087 0.0581 0.0053 −0.0505 0.0291 −0.0054 0 S4 0 0.0225 −0.1301 0.1638 −0.0413 −0.1012 0.1103 −0.0452 0.0067 0 S5 −6.2325 −0.061 −0.0037 −0.0472 0.3094 −0.5229 0.4199 −0.1649 0.0257 0 S6 0.4782 −0.092 0.0962 −0.1588 0.2881 −0.3518 0.2616 −0.1062 0.0192 0 S7 0 −0.0151 −0.0532 0.0425 0.0094 −0.0356 0.0085 0.009 −0.0039 0 S8 0 −0.0101 −0.0934 0.0497 0.0399 −0.0661 0.0321 −0.0053 0 0 S9 −49.08 0.1451 −0.2207 0.1683 −0.1105 0.058 −0.0226 0.0051 −0.0005 0 S10 −5.4303 −0.0164 0.0172 −0.0595 0.0534 −0.0275 0.0084 −0.0014   1E-04 0 S11 −1.136 0.0251 −0.1801 0.1935 −0.1377 0.0586 −0.014 0.0017 −9E-05 0 S12 0.0272 −0.1034 0.0166 3E-05 −0.0063 0.0037 −0.0009 0.0001 −5E-06 0 S13 −0.8 −0.4195 0.2062 −0.0728 0.0211 −0.0048 0.0007 −8E-05   4E-06 −1E-07 S14 −1.3207 −0.2931 0.1671 −0.0741 0.0239 −0.0053 0.0008 −7E-05   4E-06 −8E-08

Fifth Example

FIG. 9 is a view illustrating a fifth example of an optical imaging system, and FIG. 10 illustrates aberration curves of the optical imaging system of FIG. 9.

An optical imaging system 5 includes a first lens 1005, a second lens 2005, a third lens 3005, a fourth lens 4005, a fifth lens 5005, a sixth lens 6005, and a seventh lens 7005.

The first lens 1005 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2005 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3005 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4005 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The fifth lens 5005 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6005 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6005. The seventh lens 7005 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7005, and one inflection point is formed on the image-side surface of the seventh lens 7005.

The optical imaging system 5 further includes a stop, a filter 8005, and an image sensor 9005. The stop is disposed between the first lens 1005 and the second lens 2005 to adjust an amount of light incident onto the image sensor 9005. The filter 8005 is disposed between the seventh lens 7005 and the image sensor 9005 to block infrared rays. The image sensor 9005 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 9, the stop is disposed at a distance of 1.169 mm from the object-side surface of the first lens 1005 toward the imaging plane of the optical imaging system 5. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 5 listed in Table 59 that appears later in this application.

Table 9 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 9, and Table 10 below shows aspherical coefficients of the lenses of FIG. 9.

TABLE 9 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 1.9512 0.4488 1.546 56.114 1.307 S2  Lens 3.1152 0.1260 1.253 S3  Second 2.8686 0.5753 1.546 56.114 1.214 S4  Lens −12.9825 0.0186 1.180 S5 (Stop) Third 4.5064 0.1856 1.679 19.236 1.074 S6  Lens 2.1969 0.5197 1.016 S7  Fourth −2108.8653 0.2796 1.679 19.236 1.179 S8  Lens −6755.4364 0.1715 1.338 S9  Fifth 3.1135 0.2734 1.546 56.114 1.528 S10 Lens 3.2672 0.2417 1.808 S11 Sixth 3.2228 0.3650 1.679 19.236 1.996 S12 Lens 2.5388 0.1438 2.320 S13 Seventh 1.4451 0.5122 1.537 53.955 2.500 S14 Lens 1.2680 0.2501 2.738 S15 Filter Infinity 0.1100 1.519 64.166 2.940 S16 Infinity 0.5924 2.971 S17 Imaging Infinity 0.0054 3.251 Plane

TABLE 10 K A B C D E F G H J S1  −7.5279 0.0857 −0.105 0.0528 −0.0256 −0.0221 0.0379 −0.0166 0.0023 0 S2  −19.893 −0.0142 −0.1337 0.0682 0.0621 −0.0783 0.0306 −0.0031 −0.0006 0 S3  −0.0142 −0.0449 −0.0418 −0.0147 0.1136 0.012 −0.1333 0.0892 −0.0193 0 S4  0 0.0281 −0.189 0.276 −0.0808 −0.2297 0.2908 −0.1382 0.024 0 S5  −6.2325 −0.0763 −0.0054 −0.0795 0.6054 −1.1875 1.107 −0.5047 0.0912 0 S6  0.4782 −0.115 0.1396 −0.2676 0.5637 −0.7991 0.6898 −0.325 0.0682 0 S7  0 −0.0188 −0.0772 0.0717 0.0184 −0.081 0.0225 0.0277 −0.0139 0 S8  0 −0.0127 −0.1356 0.0837 0.0781 −0.1502 0.0847 −0.0163 0 0 S9  −49.08 0.1815 −0.3205 0.2837 −0.2161 0.1317 −0.0595 0.0158 −0.0017 0 S10 −5.4303 −0.0205 0.025 −0.1003 0.1046 −0.0624 0.0222 −0.0043 0.0003 0 S11 −1.136 0.0314 −0.2615 0.3261 −0.2695 0.133 −0.0369 0.0053 −0.0003 0 S12 0.0272 −0.1293 0.0241 5E−05 −0.0123 0.0085 −0.0024 0.0003 −2E−05 0 S13 −0.8 −0.5247 0.2994 −0.1227 0.0414 −0.0108 0.002 −0.0002   2E−05 −4E−07 S14 −1.3207 −0.3666 0.2425 −0.1248 0.0468 −0.0121 0.002 −0.0002   1E−05 −3E−07

Sixth Example

FIG. 11 is a view illustrating a sixth example of an optical imaging system, and FIG. 12 illustrates aberration curves of the optical imaging system of FIG. 11.

An optical imaging system 6 includes a first lens 1006, a second lens 2006, a third lens 3006, a fourth lens 4006, a fifth lens 5006, a sixth lens 6006, and a seventh lens 7006.

The first lens 1006 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2006 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3006 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4006 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5006 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6006 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6006. The seventh lens 7006 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7006.

The optical imaging system 6 further includes a stop, a filter 8006, and an image sensor 9006. The stop is disposed between the first lens 1006 and the second lens 2006 to adjust an amount of light incident onto the image sensor 9006. The filter 8006 is disposed between the seventh lens 7006 and the image sensor 9006 to block infrared rays. The image sensor 9006 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 11, the stop is disposed at a distance of 0.383 mm from the object-side surface of the first lens 1006 toward the imaging plane of the optical imaging system 6. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 6 listed in Table 59 that appears later in this application.

Table 11 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 11, and Table 12 below shows aspherical coefficients of the lenses of FIG. 11.

TABLE 11 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 2.1824 0.3329 1.546 56.114 1.380 S2  Lens 1.9439 0.0500 1.369 S3 (Stop) Second 1.6857 0.7322 1.546 56.114 1.335 S4  Lens 28.3727 0.0500 1.264 S5  Third 7.1536 0.2200 1.679 19.236 1.185 S6  Lens 2.9223 0.4264 1.050 S7  Fourth 46.9146 0.3121 1.646 23.528 1.112 S8  Lens 17.5860 0.2616 1.268 S9  Fifth 2.2655 0.2700 1.646 23.528 1.774 S10 Lens 2.3143 0.3731 1.839 S11 Sixth 8.5186 0.6078 1.546 56.114 2.160 S12 Lens −1.9871 0.3782 2.308 S13 Seventh −4.7165 0.3600 1.546 56.114 2.780 S14 Lens 1.8919 0.1457 2.998 S15 Filter Infinity 0.1100 1.519 64.166 3.353 S16 Infinity 0.6600 3.385 S17 Imaging Infinity 0.0100 3.712 Plane

TABLE 12 K A B C D E F G H S1  −3.5715 0.0005 0.0011 −0.0181 0.0025 0.0107 −0.0084 0.0026 −0.0003 S2  −9.1496 −0.0513 −0.0055 0.0116 0.0161 −0.0207 0.0078 −0.001 0 S3  −2.5622 −0.0879 0.1115 −0.1204 0.1625 −0.1325 0.0578 −0.0118 0.0006 S4  −90 −0.078 0.2103 −0.4384 0.6397 −0.6153 0.3736 −0.1288 0.0189 S5  0 −0.1133 0.2975 −0.5447 0.7496 −0.7199 0.4525 −0.1642 0.0257 S6  4.6946 −0.0705 0.1434 −0.2144 0.1998 −0.0956 −0.0142 0.0399 −0.0137 S7  0 −0.0972 0.1221 −0.3303 0.5457 −0.6222 0.4555 −0.1995 0.0405 S8  0 −0.1596 0.2027 −0.3281 0.3412 −0.2472 0.1212 −0.0385 0.0064 S9  −18.27 −0.0564 −0.0069 0.0518 −0.0566 0.0228 −0.0011 −0.0019 0.0004 S10 −15.127 −0.0603 −0.0145 0.0594 −0.0601 0.0318 −0.0096 0.0015 −1E−04 S11 0 0.0027 −0.0398 0.025 −0.0137 0.005 −0.001   1E−04 −4E−06 S12 −1.1693 0.1224 −0.1006 0.0535 −0.0195 0.005 −0.0008   8E−05 −3E−06 S13 −4.4446 −0.097 −0.0137 0.0358 −0.0141 0.0028 −0.0003   2E−05 −5E−07 S14 −8.7431 −0.0906 0.0342 −0.009 0.0017 −0.0002 2E−05 −1E−06   3E−08

Seventh Example

FIG. 13 is a view illustrating a seventh example of an optical imaging system, and FIG. 14 illustrates aberration curves of the optical imaging system of FIG. 13.

An optical imaging system 7 includes a first lens 1007, a second lens 2007, a third lens 3007, a fourth lens 4007, a fifth lens 5007, a sixth lens 6007, and a seventh lens 7007.

The first lens 1007 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2007 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3007 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4007 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5007 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6007 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6007. The seventh lens 7007 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7007.

The optical imaging system 7 further includes a stop, a filter 8007, and an image sensor 9007. The stop is disposed between the first lens 1007 and the second lens 2007 to adjust an amount of light incident onto the image sensor 9007. The filter 8007 is disposed between the seventh lens 7007 and the image sensor 9007 to block infrared rays. The image sensor 9007 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 13, the stop is disposed at a distance of 0.406 mm from the object-side surface of the first lens 1007 toward the imaging plane of the optical imaging system 7. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 7 listed in Table 59 that appears later in this application.

Table 13 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 13, and Table 14 below shows aspherical coefficients of the lenses of FIG. 13.

TABLE 13 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 2.4130 0.3501 1.546 56.114 1.537 S2  Lens 2.0911 0.0557 1.523 S3 (Stop) Second 1.8209 0.8339 1.546 56.114 1.487 S4  Lens 30.3409 0.0612 1.394 S5  Third 7.9820 0.2450 1.679 19.236 1.311 S6  Lens 3.2431 0.4785 1.169 S7  Fourth 487.1996 0.3674 1.646 23.528 1.243 S8  Lens 31.8168 0.2878 1.436 S9  Fifth 2.4474 0.2784 1.646 23.528 1.801 S10 Lens 2.4696 0.4070 2.073 S11 Sixth 10.8471 0.6961 1.546 56.114 2.406 S12 Lens −2.0239 0.4094 2.510 S13 Seventh −4.6240 0.4010 1.546 56.114 3.096 S14 Lens 2.0561 0.2000 3.356 S15 Filter Infinity 0.1100 1.519 64.166 3.731 S16 Infinity 0.7069 3.760 S17 Imaging Infinity 0.0093 4.108 Plane

TABLE 14 K A B C D E F G H S1  −3.5658 −7E−05 0.0019 −0.0092 0.0011 0.0033 −0.0021 0.0005 −5E−05 S2  −8.9286 −0.0352 −0.0028 0.0051 0.0057 −0.0059 0.0017 −0.0002 0 S3  −2.4366 −0.0674 0.07 −0.0576 0.0566 −0.0335 0.0101 −0.0011 −5E−05 S4  100 −0.0532 0.1076 −0.1828 0.2279 −0.188 0.0972 −0.0281 0.0034 S5  0 −0.08 0.1571 −0.2194 0.2412 −0.1897 0.098 −0.029 0.0037 S6  4.6754 −0.0522 0.0819 −0.0948 0.0738 −0.0366 0.0059 0.0034 −0.0014 S7  0 −0.0681 0.0624 −0.1419 0.1974 −0.1902 0.1178 −0.0435 0.0074 S8  0 −0.1149 0.119 −0.1633 0.1494 −0.0968 0.0424 −0.0116 0.0015 S9  −18.968 −0.0403 −0.0067 0.0231 −0.0177 0.0048 0.0003 −0.0004   7E−05 S10 −15.615 −0.0435 −0.0045 0.0194 −0.0155 0.0065 −0.0016 0.0002 −1E−05 S11 0 −0.0047 −0.014 0.0069 −0.0046 0.0019 −0.0004   4E−05 −2E−06 S12 −1.1609 0.0886 −0.0595 0.0289 −0.0106 0.0028 −0.0004   4E−05 −1E−06 S13 −4.7786 −0.0727 −0.0022 0.0133 −0.0043 0.0007 −6E−05   3E−06 −5E−08 S14 −8.9618 −0.0676 0.0222 −0.0053 0.0009 −0.0001   9E−06 −4E−07   7E−09

Eighth Example

FIG. 15 is a view illustrating an eighth example of an optical imaging system, and FIG. 16 illustrates aberration curves of the optical imaging system of FIG. 15.

An optical imaging system 8 includes a first lens 1008, a second lens 2008, a third lens 3008, a fourth lens 4008, a fifth lens 5008, a sixth lens 6008, and a seventh lens 7008.

The first lens 1008 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2008 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3008 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4008 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5008 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6008 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6008. The seventh lens 7008 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7008.

The optical imaging system 8 further includes a stop, a filter 8008, and an image sensor 9008. The stop is disposed between the first lens 1008 and the second lens 2008 to adjust an amount of light incident onto the image sensor 9008. The filter 8008 is disposed between the seventh lens 7008 and the image sensor 9008 to block infrared rays. The image sensor 9008 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 15, the stop is disposed at a distance of 0.335 mm from the object-side surface of the first lens 1008 toward the imaging plane of the optical imaging system 8. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 8 listed in Table 59 that appears later in this application.

Table 15 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 15, and Table 16 below shows aspherical coefficients of the lenses of FIG. 15.

TABLE 15 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 1.9921 0.2890 1.546 56.114 1.269 S2  Lens 1.7264 0.0460 1.259 S3 (Stop) Second 1.5033 0.6884 1.546 56.114 1.228 S4  Lens 25.0492 0.0505 1.151 S5  Third 6.5899 0.2023 1.679 19.236 1.083 S6  Lens 2.6775 0.3951 0.966 S7  Fourth 402.2288 0.3033 1.646 23.528 1.026 S8  Lens 26.2678 0.2376 1.187 S9  Fifth 2.0206 0.2299 1.646 23.528 1.490 S10 Lens 2.0389 0.3360 1.715 S11 Sixth 8.9553 0.5747 1.546 56.114 1.986 S12 Lens −1.6709 0.3380 2.074 S13 Seventh −3.8176 0.3310 1.546 56.114 2.556 S14 Lens 1.6975 0.1461 2.773 S15 Filter Infinity 0.1100 1.519 64.166 3.104 S16 Infinity 0.5900 3.134 S17 Imaging Infinity 0.0093 3.409 Plane

TABLE 16 K A B C D E F G H S1  −3.5658 −0.0001 0.005 −0.035 0.006 0.0273 −0.0256 0.0093 −0.0013 S2  −8.9286 −0.0626 −0.0074 0.0197 0.0322 −0.0484 0.0209 −0.0032 0 S3  −2.4366 −0.1197 0.1825 −0.2203 0.3179 −0.276 0.1215 −0.0196 −0.0013 S4  100 −0.0946 0.2806 −0.6992 1.2789 −1.5482 1.1736 −0.498 0.0885 S5  0 −0.1422 0.4096 −0.8391 1.3535 −1.5621 1.1838 −0.5146 0.0955 S6  4.6754 −0.0927 0.2136 −0.3628 0.4139 −0.3014 0.0714 0.0601 −0.0365 S7  0 −0.1209 0.1626 −0.5427 1.1077 −1.5662 1.4226 −0.7711 0.1921 S8  0 −0.2042 0.3103 −0.6247 0.8383 −0.7972 0.512 −0.2051 0.0399 S9  −18.968 −0.0716 −0.0174 0.0884 −0.0994 0.0393 0.0033 −0.0076 0.0017 S10 −15.615 −0.0773 −0.0117 0.074 −0.0868 0.0537 −0.0194 0.0038 −0.0003 S11 0 −0.0084 −0.0364 0.0262 −0.0257 0.0153 −0.0048 0.0008 −5E−05 S12 −1.1609 0.1575 −0.1551 0.1106 −0.0597 0.0227 −0.0054 0.0007 −4E−05 S13 −4.7786 −0.1291 −0.0057 0.0509 −0.0242 0.0056 −0.0007   5E−05 −1E−06 S14 −8.9618 −0.1202 0.0579 −0.0202 0.005 −0.0009 0.0001 −7E−06   2E−07

Ninth Example

FIG. 17 is a view illustrating a ninth example of an optical imaging system, and FIG. 18 illustrates aberration curves of the optical imaging system of FIG. 17.

An optical imaging system 9 includes a first lens 1009, a second lens 2009, a third lens 3009, a fourth lens 4009, a fifth lens 5009, a sixth lens 6009, and a seventh lens 7009.

The first lens 1009 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2009 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3009 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4009 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5009 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6009 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6009. The seventh lens 7009 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7009.

The optical imaging system 9 further includes a stop, a filter 8009, and an image sensor 9009. The stop is disposed between the first lens 1009 and the second lens 2009 to adjust an amount of light incident onto the image sensor 9009. The filter 8009 is disposed between the seventh lens 7009 and the image sensor 9009 to block infrared rays. The image sensor 9009 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 17, the stop is disposed at a distance of 0.731 mm from the object-side surface of the first lens 1009 toward the imaging plane of the optical imaging system 9. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 9 listed in Table 59 that appears later in this application.

Table 17 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 17, and Table 18 below shows aspherical coefficients of the lenses of FIG. 17.

TABLE 17 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 1.732331 0.731243 1.546 56.114 1.250 S2 (Stop) Lens 12.53699 0.070023 1.181 S3  Second 5.589296 0.2 1.667 20.353 1.147 S4  Lens 2.573966 0.39715 1.100 S5  Third 8.065523 0.384736 1.546 56.114 1.128 S6  Lens 7.836681 0.192591 1.247 S7  Fourth 6.687158 0.244226 1.546 56.114 1.276 S8  Lens 30.32847 0.271297 1.374 S9  Fifth −3.28742 0.24968 1.667 20.353 1.481 S10 Lens −4.51593 0.138845 1.734 S11 Sixth 5.679879 0.519865 1.546 56.114 2.150 S12 Lens −1.89003 0.316634 2.318 S13 Seventh −3.93255 0.3 1.546 56.114 2.640 S14 Lens 1.741826 0.193709 2.747 S15 Filter Infinity 0.11 1.518 64.166 3.146 S16 Infinity 0.77 3.177 S17 Imaging Infinity 0.01 3.536 Plane

TABLE 18 K A B C D E F G H J S1  −0.7464 0.0139 0.0344 −0.0749 0.1029 −0.0706 0.0173 0.0042 −0.0023 0 S2  36.669 −0.0823 0.195 −0.3067 0.3634 −0.323 0.1902 −0.0632 0.0086 0 S3  −1.3559 −0.1603 0.3305 −0.4059 0.3324 −0.1787 0.0673 −0.0166 0.0018 0 S4  −0.4109 −0.0907 0.1444 0.1155 −0.7969 1.5009 −1.4406 0.7219 −0.147 0 S5  0 −0.0739 0.0463 −0.1203 0.1165 −0.0578 −0.0089 0.0233 −0.0057 0 S6  0 −0.0932 0.0034 0.0521 −0.1827 0.2457 −0.2173 0.1126 −0.0241 0 S7  25.148 −0.1235 −0.1887 0.3763 −0.554 0.6731 −0.5796 0.2782 −0.0538 0 S8  −99 −9E−05 −0.3274 0.3588 −0.3195 0.3451 −0.2608 0.0995 −0.0144 0 S9  −70.894 0.0205 0.0483 −0.5284 0.7583 −0.4915 0.1636 −0.0271 0.0018 0 S10 2.2832 0.1759 −0.3448 0.2283 −0.0716 0.011 −0.0007 −4E−06   1E−06 0 S11 −99 0.1188 −0.2169 0.1675 −0.0871 0.0276 −0.0049 0.0005 −2E−05 0 S12 −3.3067 0.1644 −0.1849 0.1159 −0.049 0.0138 −0.0024 0.0002 −9E−06 0 S13 −2.4772 −0.1026 −0.0482 0.074 −0.0308 0.0067 −0.0008   6E−05 −2E−06 0 S14 −1.1028 −0.2935 0.2033 −0.1127 0.0457 −0.0129 0.0024 −0.0003   2E−05 −5E−07

Tenth Example

FIG. 19 is a view illustrating a tenth example of an optical imaging system, and FIG. 20 illustrates aberration curves of the optical imaging system of FIG. 19.

An optical imaging system 10 includes a first lens 1010, a second lens 2010, a third lens 3010, a fourth lens 4010, a fifth lens 5010, a sixth lens 6010, and a seventh lens 7010.

The first lens 1010 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2010 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3010 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4010 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5010 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6010 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6010. The seventh lens 7010 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7010.

The optical imaging system 10 further includes a stop, a filter 8010, and an image sensor 9010. The stop is disposed between the first lens 1010 and the second lens 2010 to adjust an amount of light incident onto the image sensor 9010. The filter 8010 is disposed between the seventh lens 7010 and the image sensor 9010 to block infrared rays. The image sensor 9010 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 19, the stop is disposed at a distance of 0.737 mm from the object-side surface of the first lens 1010 toward the imaging plane of the optical imaging system 10. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 10 listed in Table 59 that appears later in this application.

Table 19 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 19, and Table 20 below shows aspherical coefficients of the lenses of FIG. 19.

TABLE 19 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 1.777278 0.736573 1.546 56.114 1.320 S2 (Stop) Lens 13.62441 0.031636 1.275 S3  Second 4.156793 0.18 1.667 20.353 1.219 S4  Lens 2.323154 0.415145 1.100 S5  Third 9.38632 0.312854 1.546 56.114 1.130 S6  Lens 7.304398 0.164797 1.218 S7  Fourth 7.311147 0.508697 1.546 56.114 1.233 S8  Lens 92.26655 0.162901 1.389 S9  Fifth −2.84132 0.524055 1.667 20.353 1.445 S10 Lens −3.99298 0.03 1.787 S11 Sixth 5.494047 0.654593 1.546 56.114 2.150 S12 Lens −1.12273 0.206008 2.007 S13 Seventh −1.73815 0.3 1.546 56.114 2.349 S14 Lens 1.687765 0.282739 2.691 S15 Filter Infinity 0.11 1.518 64.166 2.880 S16 Infinity 0.77 2.910 S17 Imaging Infinity 0.01 3.271 Plane

TABLE 20 K A B C D E F G H J S1  −0.6693 0.019 0.0045 0.0138 −0.041 0.0654 −0.0558 0.0249 −0.0047 0 S2  51.354 −0.0646 0.1594 −0.2048 0.0809 0.1061 −0.1535 0.0751 −0.0134 0 S3  −6.8814 −0.1184 0.2116 −0.2405 0.0747 0.1828 −0.2452 0.1235 −0.0229 0 S4  −1.4466 −0.0499 −0.0095 0.3771 −1.1385 1.8052 −1.5802 0.7251 −0.1318 0 S5  0 −0.0499 −0.0342 0.0831 −0.3182 0.5579 −0.5566 0.305 −0.0691 0 S6  0 −0.0934 −0.0586 0.1916 −0.4553 0.5166 −0.3324 0.1317 −0.0262 0 S7  18.234 −0.1289 −0.0804 0.1149 0.0235 −0.43 0.5839 −0.3172 0.0637 0 S8  −99 0.0227 −0.4036 0.4973 −0.4749 0.3803 −0.201 0.055 −0.0054 0 S9  −36.527 0.0274 −0.2464 0.1066 0.0955 −0.0649 −0.0225 0.0256 −0.0053 0 S10 −0.0175 0.1824 −0.4161 0.4182 −0.2413 0.0789 −0.0128 0.0006   3E−05 0 S11 −99 0.0729 −0.1636 0.155 −0.0934 0.0312 −0.0057 0.0005 −2E−05 0 S12 −2.7695 0.107 −0.0898 0.0394 −0.0119 0.0025 −0.0003 2E−05 −7E−07 0 S13 −9.7133 0.0409 −0.1839 0.1384 −0.0498 0.0103 −0.0012 8E−05 −2E−06 0 S14 −0.9525 −0.1967 0.0964 −0.0426 0.0158 −0.0044 0.0009 −0.0001   7E−06 −2E−07

Eleventh Example

FIG. 21 is a view illustrating an eleventh example of an optical imaging system, and FIG. 22 illustrates aberration curves of the optical imaging system of FIG. 21.

An optical imaging system 11 includes a first lens 1011, a second lens 2011, a third lens 3011, a fourth lens 4011, a fifth lens 5011, a sixth lens 6011, and a seventh lens 7011.

The first lens 1011 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2011 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3011 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4011 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5011 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6011 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6011. The seventh lens 7011 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7011.

The optical imaging system 11 further includes a stop, a filter 8011, and an image sensor 9011. The stop is disposed between the first lens 1011 and the second lens 2011 to adjust an amount of light incident onto the image sensor 9011. The filter 8011 is disposed between the seventh lens 7011 and the image sensor 9011 to block infrared rays. The image sensor 9011 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 21, the stop is disposed at a distance of 0.698 mm from the object-side surface of the first lens 1011 toward the imaging plane of the optical imaging system 1. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 11 listed in Table 59 that appears later in this application.

Table 21 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 21, and Table 22 below shows aspherical coefficients of the lenses of FIG. 21.

TABLE 21 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 1.726735 0.698185 1.546 56.114 1.250 S2 (Stop) Lens 13.25202 0.066759 1.195 S3  Second 5.51026 0.18 1.667 20.353 1.175 S4  Lens 2.56553 0.394364 1.100 S5  Third 8.494554 0.429258 1.546 56.114 1.132 S6  Lens 7.877619 0.205752 1.258 S7  Fourth 6.709784 0.303462 1.546 56.114 1.283 S8  Lens 26.70168 0.260598 1.392 S9  Fifth −3.30097 0.260736 1.667 20.353 1.463 S10 Lens −4.37166 0.096789 1.707 S11 Sixth 5.420612 0.504951 1.546 56.114 2.150 S12 Lens −1.71566 0.279179 2.282 S13 Seventh −3.94342 0.3 1.546 56.114 2.546 S14 Lens 1.572783 0.214183 2.633 S15 Filter Infinity 0.11 1.518 64.166 2.722 S16 Infinity 0.77 2.764 S17 Imaging Infinity 0.01 3.267 Plane

TABLE 22 K A B C D E F G H J S1  −0.7517 0.0167 0.0218 −0.0308 0.0122 0.045 −0.0708 0.0409 −0.0088 0 S2  34.832 −0.0755 0.1989 −0.3733 0.5214 −0.513 0.3178 −0.1083 0.0151 0 S3  −2.6402 −0.1515 0.3308 −0.4895 0.5339 −0.4166 0.2235 −0.0704 0.0093 0 S4  −0.5069 −0.0857 0.1535 −0.0035 −0.4469 0.9403 −0.9224 0.4651 −0.0943 0 S5  0 −0.0679 0.0488 −0.1888 0.3474 −0.4437 0.3431 −0.1418 0.0251 0 S6  0 −0.09 −0.0268 0.1418 −0.3475 0.412 −0.3072 0.1379 −0.0272 0 S7  25.097 −0.1247 −0.1915 0.4352 −0.6101 0.6141 −0.4745 0.2289 −0.0464 0 S8  −99 0.011 −0.4269 0.5921 −0.5748 0.4876 −0.2996 0.1034 −0.0143 0 S9  −68.611 0.0834 −0.1663 −0.271 0.6084 −0.449 0.1594 −0.0274 0.0018 0 S10 2.9309 0.2443 −0.5003 0.3866 −0.1596 0.039 −0.0058 0.0005 −2E−05 0 S11 −99 0.1262 −0.2305 0.1843 −0.0988 0.0321 −0.0059 0.0006 −2E−05 0 S12 −3.6172 0.1432 −0.1567 0.0947 −0.0381 0.0102 −0.0017 0.0002 −6E−06 0 S13 −2.5851 −0.0853 −0.0998 0.1236 −0.0546 0.0131 −0.0018 0.0001 −4E−06 0 S14 −1.0626 −0.3198 0.227 −0.1315 0.0571 −0.0175 0.0036 −0.0005   3E−05 −1E−06

Twelfth Example

FIG. 23 is a view illustrating a twelfth example of an optical imaging system, and FIG. 24 illustrates aberration curves of the optical imaging system of FIG. 23.

An optical imaging system 12 includes a first lens 1012, a second lens 2012, a third lens 3012, a fourth lens 4012, a fifth lens 5012, a sixth lens 6012, and a seventh lens 7012.

The first lens 1012 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2012 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3012 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4012 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5012 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6012 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6012. The seventh lens 7012 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7012, and one inflection point is formed on the image-side surface of the seventh lens 7012.

The optical imaging system 12 further includes a stop, a filter 8012, and an image sensor 9012. The stop is disposed between the second lens 2012 and the third lens 3012 to adjust an amount of light incident onto the image sensor 9012. The filter 8012 is disposed between the seventh lens 7012 and the image sensor 9012 to block infrared rays. The image sensor 9012 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 23, the stop is disposed at a distance of 1.158 mm from the object-side surface of the first lens 1012 toward the imaging plane of the optical imaging system 12. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 12 listed in Table 59 that appears later in this application.

Table 23 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 23, and Table 24 below shows aspherical coefficients of the lenses of FIG. 23.

TABLE 23 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1  First 2.141 0.481 1.546 56.114 1.450 S2  Lens 3.251 0.110 1.350 S3  Second 3.253 0.542 1.546 56.114 1.285 S4  Lens −15.773 0.025 1.232 S5 (Stop) Third 8.425 0.230 1.679 19.236 1.157 S6  Lens 3.514 0.625 1.095 S7  Fourth 25.986 0.296 1.679 19.236 1.265 S8  Lens 15.894 0.230 1.452 S9  Fifth 3.048 0.400 1.546 56.114 1.675 S10 Lens 3.616 0.290 2.092 S11 Sixth 3.762 0.400 1.679 19.236 2.153 S12 Lens 2.792 0.204 2.476 S13 Seventh 1.614 0.510 1.537 53.955 2.938 S14 Lens 1.326 0.196 3.102 S15 Filter Infinity 0.110 1.518 64.197 3.420 S16 Infinity 0.639 3.450 S17 Imaging Infinity 0.011 3.730 Plane

TABLE 24 K A B C D E F G H J S1 −8.038 0.0707 −0.0797 0.0334 0.0072 −0.0491 0.0465 −0.0186 0.0032 −0.0002 S2 −20.594 −0.0019 −0.1494 0.2041 −0.2922 0.3755 −0.3085 0.1486 −0.0387 0.0042 S3 −0.0908 −0.0339 −0.0641 0.1368 −0.2821 0.4921 −0.4815 0.2605 −0.0746 0.0088 S4 −0.4822 −0.0436 0.1761 −0.3256 0.1999 0.1916 −0.4291 0.3203 −0.1141 0.0162 S5 −1.1841 −0.1073 0.2544 −0.4683 0.4991 −0.2863 0.0565 0.0325 −0.0229 0.0044 S6 0.8733 −0.0693 0.0357 0.2048 −0.8833 1.7328 −1.9742 1.3464 −0.5106 0.083 S7 −0.4999 −0.0314 0.0135 −0.2894 0.9716 −1.7181 1.7923 −1.1152 0.3837 −0.0563 S8 −1E−06 −0.0273 −0.1177 0.212 −0.2544 0.2157 −0.1264 0.0469 −0.0093 0.0007 S9 −41.843 0.1624 −0.3487 0.4016 −0.3105 0.1396 −0.027 −0.0038 0.0026 −0.0003 S10 −5.1424 0.0397 −0.1364 0.1569 −0.1229 0.0633 −0.0212 0.0044 −0.0005  3E−05 S11 −2.1666 0.0356 −0.1809 0.1985 −0.1438 0.0641 −0.0173 0.0028 −0.0002  9E−06 S12 −0.0207 −0.1043 0.0239 −0.0063 −0.0007 0.0007 −3E−06 −4E−05 7E−06 −4E−07 S13 −0.7948 −0.4128 0.1863 −0.0516 0.0101 −0.0015 0.0002 −1E−05 6E−07 −1E−08 S14 −1.3226 −0.3105 0.1713 −0.0712 0.0213 −0.0043 0.0006 −5E−05 2E−06 −5E−08

Thirteenth Example

FIG. 25 is a view illustrating a thirteenth example of an optical imaging system, and FIG. 26 illustrates aberration curves of the optical imaging system of FIG. 25.

An optical imaging system 13 includes a first lens 1013, a second lens 2013, a third lens 3013, a fourth lens 4013, a fifth lens 5013, a sixth lens 6013, and a seventh lens 7013.

The first lens 1013 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2013 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3013 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4013 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5013 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6013 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6013. The seventh lens 7013 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7013, and one inflection point is formed on the image-side surface of the seventh lens 7013.

The optical imaging system 13 further includes a stop, a filter 8013, and an image sensor 9013. The stop is disposed between the second lens 2013 and the third lens 3013 to adjust an amount of light incident onto the image sensor 9013. The filter 8013 is disposed between the seventh lens 7013 and the image sensor 9013 to block infrared rays. The image sensor 9013 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 25, the stop is disposed at a distance of 1.077 mm from the object-side surface of the first lens 1013 toward the imaging plane of the optical imaging system 13. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 13 listed in Table 59 that appears later in this application.

Table 25 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 25, and Table 26 below shows aspherical coefficients of the lenses of FIG. 25.

TABLE 25 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 2.118305139 0.467301 1.546 56.114 1.360 S2 Lens 2.746507151 0.088291 1.343 S3 Second 2.805315991 0.495083 1.546 56.114 1.313 S4 Lens 29.97218136 0.026058 1.266 S5 (Stop) Third 5.620498788 0.273577 1.679 19.236 1.212 S6 Lens 2.858933317 0.365293 1.199 S7 Fourth 6.085110345 0.415715 1.546 56.114 1.285 S8 Lens 19.14383505 0.530007 1.350 S9 Fifth 5.783090879 0.4 1.679 19.236 1.600 S10 Lens 4.564410244 0.188701 2.100 S11 Sixth 2.807723971 0.444625 1.546 56.114 1.903 S12 Lens 3.20115397 0.276382 2.470 S13 Seventh 1.650083939 0.458527 1.546 56.114 2.646 S14 Lens 1.194405383 0.21044 2.806 S15 Filter Infinity 0.21 1.518 64.197 3.241 S16 Infinity 0.643292 3.319 S17 Imaging Infinity 0.006708 3.729 Plane

TABLE 26 K A B C D E F G H J S1 −1 −0.0103 0.0078 −0.0588 0.0925 −0.0904 0.0486 −0.0119 0.0004 0.0002 S2 −13.05 0.0258 −0.1274 0.035 0.0617 −0.0405 0.0003 0.0049 −0.0007 −0.0001 S3 −1.2154 −0.0166 −0.0602 −0.0171 0.0625 0.0481 −0.1007 0.0511 −0.0092 0.0002 S4 −7.0515 −0.047 0.2681 −0.8387 1.4546 −1.5426 1.0264 −0.4201 0.0974 −0.0099 S5 8.8287 −0.0982 0.3106 −0.8268 1.4538 −1.7174 1.3464 −0.6715 0.1944 −0.025 S6 1.7217 −0.0695 0.0939 −0.1196 0.1421 −0.2108 0.2773 −0.2257 0.0997 −0.0182 S7 −1.4309 −0.0448 −0.0056 0.0299 −0.0484 −0.0039 0.0856 −0.1013 0.0511 −0.0095 S8 5.8592 −0.0455 −0.0133 0.0337 −0.0729 0.0922 −0.0766 0.0411 −0.0128 0.0018 S9 −43.521 0.0008 −0.0239 0.0222 −0.0173 0.0051 −0.0002 −0.0003  5E−05  5E−06 S10 −11.855 −0.0163 −0.0578 0.0832 −0.067 0.0334 −0.0109 0.0023 −0.0003  1E−05 S11 −16.199 0.1024 −0.1959 0.1931 −0.1564 0.0797 −0.0243 0.0044 −0.0004  2E−05 S12 0.1668 −0.0913 0.11 −0.1075 0.0537 −0.0157 0.0029 −0.0003  2E−05 −6E−07 S13 −0.8022 −0.4375 0.2118 −0.049 0.0016 0.0021 −0.0006 7E−05 −4E−06  1E−07 S14 −1.407 −0.3709 0.2499 −0.1268 0.0461 −0.0114 0.0018 −0.0002  1E−05 −3E−07

Fourteenth Example

FIG. 27 is a view illustrating a fourteenth example of an optical imaging system, and FIG. 28 illustrates aberration curves of the optical imaging system of FIG. 27.

An optical imaging system 14 includes a first lens 1014, a second lens 2014, a third lens 3014, a fourth lens 4014, a fifth lens 5014, a sixth lens 6014, and a seventh lens 7014.

The first lens 1014 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2014 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3014 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4014 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5014 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6014 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6014. The seventh lens 7014 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7014, and one inflection point is formed on the image-side surface of the seventh lens 7014.

The optical imaging system 14 further includes a stop, a filter 8014, and an image sensor 9014. The stop is disposed between the second lens 2014 and the third lens 3014 to adjust an amount of light incident onto the image sensor 9014. The filter 8014 is disposed between the seventh lens 7014 and the image sensor 9014 to block infrared rays. The image sensor 9014 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 27, the stop is disposed at a distance of 1.230 mm from the object-side surface of the first lens 1014 toward the imaging plane of the optical imaging system 14. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 14 listed in Table 59 that appears later in this application.

Table 27 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 27, and Table 28 below shows aspherical coefficients of the lenses of FIG. 27.

TABLE 27 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 2.075993714 0.461868 1.546 56.114 1.450 S2 Lens 2.462677578 0.142767 1.423 S3 Second 2.513805379 0.6 1.546 56.114 1.392 S4 Lens 29.01104645 0.025 1.339 S5 (Stop) Third 8.684767584 0.23 1.679 19.236 1.295 S6 Lens 3.558027838 0.403456 1.273 S7 Fourth 4.7911408 0.352214 1.546 56.114 1.378 S8 Lens 7.075227558 0.349153 1.451 S9 Fifth 4.281224487 0.35 1.546 56.114 1.632 S10 Lens 6.135345116 0.360979 2.012 S11 Sixth 4.414767246 0.43 1.679 19.236 2.013 S12 Lens 3.921880607 0.295711 2.303 S13 Seventh 1.740330993 0.438887 1.546 56.114 2.548 S14 Lens 1.223557467 0.199966 2.831 S15 Filter Infinity 0.21 1.518 64.197 3.299 S16 Infinity 0.637453 3.369871273 S17 Imaging Infinity 0.012547 3.730619904 Plane

TABLE 28 K A B C D E F G H J S1 −1 −0.0092 0.003 −0.0414 0.0636 −0.0562 0.026 −0.0049 −0.0002 0.0001 S2 −11.557 0.0601 −0.1844 0.2568 −0.3524 0.3604 −0.23 0.0871 −0.018 0.0016 S3 −0.8307 −0.0024 −0.0852 0.1656 −0.3174 0.3977 −0.2764 0.1063 −0.0212 0.0016 S4 33.131 −0.027 0.1754 −0.4193 0.3931 −0.0382 −0.2294 0.1977 −0.0691 0.0091 S5 14.848 −0.09 0.2473 −0.422 0.2881 0.1413 −0.4099 0.3093 −0.1063 0.0142 S6 2.0645 −0.0757 0.0883 0.0177 −0.3102 0.6013 −0.6108 0.357 −0.1119 0.0146 S7 −10.536 −0.0399 −0.0508 0.2144 −0.4431 0.5288 −0.3825 0.1604 −0.034 0.0025 S8 1.3378 −0.0489 −0.0512 0.1032 −0.1013 0.0149 0.0599 −0.0576 0.0222 −0.0032 S9 −44.096 0.0784 −0.1355 0.1317 −0.0913 0.0374 −0.0091 0.001  4E−05 −1E−05 S10 −6.651 0.049 −0.1189 0.1277 −0.0852 0.0342 −0.0083 0.0012 −1E−04  3E−06 S11 −13.816 0.0584 −0.1268 0.1161 −0.0837 0.0379 −0.0102 0.0016 −0.0001  5E−06 S12 1.0596 −0.0574 0.0273 −0.0248 0.0087 −0.0016 0.0002 −9E−06  2E−07 −5E−10 S13 −0.8717 −0.4042 0.1652 −0.0262 −0.0057 0.0037 −0.0008  9E−05 −6E−06  1E−07 S14 −1.3714 −0.3652 0.2385 −0.1205 0.0439 −0.0107 0.0017 −0.0002  9E−06 −2E−07

Fifteenth Example

FIG. 29 is a view illustrating a fifteenth example of an optical imaging system, and FIG. 30 illustrates aberration curves of the optical imaging system of FIG. 29.

An optical imaging system 15 includes a first lens 1015, a second lens 2015, a third lens 3015, a fourth lens 4015, a fifth lens 5015, a sixth lens 6015, and a seventh lens 7015.

The first lens 1015 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2015 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3015 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4015 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5015 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6015 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6015. The seventh lens 7015 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7015, and one inflection point is formed on the image-side surface of the seventh lens 7015.

The optical imaging system 15 further includes a stop, a filter 8015, and an image sensor 9015. The stop is disposed between the second lens 2015 and the third lens 3015 to adjust an amount of light incident onto the image sensor 9015. The filter 8015 is disposed between the seventh lens 7015 and the image sensor 9015 to block infrared rays. The image sensor 9015 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 29, the stop is disposed at a distance of 1.272 mm from the object-side surface of the first lens 1015 toward the imaging plane of the optical imaging system 15. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 15 listed in Table 59 that appears later in this application.

Table 29 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 29, and Table 30 below shows aspherical coefficients of the lenses of FIG. 29.

TABLE 29 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 2.283093838 0.490729 1.546 56.114 1.470 S2 Lens 2.707510257 0.156211 1.439 S3 Second 2.740085348 0.6 1.546 56.114 1.405 S4 Lens 44.17095481 0.025 1.322 S5 (Stop) Third 9.160760578 0.23 1.679 19.236 1.287 S6 Lens 3.724008354 0.422131 1.325 S7 Fourth 5.85087532 0.453108 1.546 56.114 1.461 S8 Lens 9.666213958 0.418018 1.563 S9 Fifth 4.726356381 0.463035 1.546 56.114 1.772 S10 Lens 8.447007624 0.424734 2.209 S11 Sixth 6.360171602 0.454398 1.679 19.236 2.238 S12 Lens 3.885246175 0.229796 2.557 S13 Seventh 1.81506609 0.565464 1.546 56.114 3.026 S14 Lens 1.393810895 0.307376 3.262 S15 Filter Infinity 0.11 1.518 64.197 3.692 S16 Infinity 0.635004 3.733 S17 Imaging Infinity 0.015 4.155 Plane

TABLE 30 K A B C D E F G H J S1 −1 −0.01 0.0142 −0.0583 0.0925 −0.09 0.0524 −0.0176 0.0031 −0.0002 S2 −11.438 0.0551 −0.1648 0.2592 −0.3427 0.3017 −0.1612 0.0505 −0.0085 0.0006 S3 −0.9056 0.0096 −0.113 0.2287 −0.3273 0.271 −0.1107 0.0148 0.0028 −0.0007 S4 42.634 0.0014 −0.1953 1.05 −2.3921 2.8557 −1.9404 0.7573 −0.1585 0.0138 S5 14.891 −0.0708 −0.0264 0.7649 −2.0539 2.6215 −1.8758 0.7719 −0.1712 0.0159 S6 1.8252 −0.0676 0.0559 0.1408 −0.4974 0.6826 −0.5253 0.2382 −0.0594 0.0063 S7 −10.152 −0.0045 −0.2167 0.6751 −1.1658 1.2261 −0.8032 0.3179 −0.069 0.0063 S8 1.7534 −0.0452 −0.0162 0.0022 0.0594 −0.1108 0.0956 −0.0454 0.0115 −0.0012 S9 −44.62 0.0743 −0.114 0.0998 −0.0717 0.0382 −0.0147 0.0036 −0.0005  3E−05 S10 −4.9001 0.0668 −0.093 0.0627 −0.027 0.007 −0.001  7E−05 −1E−06 −8E−08 S11 −13.159 0.0655 −0.1106 0.0833 −0.0459 0.016 −0.0034 0.0004 −3E−05  8E−07 S12 0.8181 −0.0437 −0.0059 0.0082 −0.0058 0.0021 −0.0004  5E−05 −3E−06  6E−08 S13 −0.8756 −0.2944 0.0941 −0.0094 −0.0031 0.0013 −0.0002  2E−05 −9E−07  2E−08 S14 −1.3021 −0.2412 0.1156 −0.0414 0.0109 −0.002 0.0002 −2E−05  8E−07 −1E−08

Sixteenth Example

FIG. 31 is a view illustrating a sixteenth example of an optical imaging system, and FIG. 32 illustrates aberration curves of the optical imaging system of FIG. 31.

An optical imaging system 16 includes a first lens 1016, a second lens 2016, a third lens 3016, a fourth lens 4016, a fifth lens 5016, a sixth lens 6016, and a seventh lens 7016.

The first lens 1016 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2016 has a negative refractive power, a concave object-side surface, and a concave image-side surface. The third lens 3016 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4016 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5016 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6016 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6016. The seventh lens 7016 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7016, and one inflection point is formed on the image-side surface of the seventh lens 7016.

The optical imaging system 16 further includes a stop, a filter 8016, and an image sensor 9016. The stop is disposed between the first lens 1016 and the second lens 2016 to adjust an amount of light incident onto the image sensor 9016. The filter 8016 is disposed between the seventh lens 7016 and the image sensor 9016 to block infrared rays. The image sensor 9016 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 31, the stop is disposed at a distance of 0.937 mm from the object-side surface of the first lens 1016 toward the imaging plane of the optical imaging system 16. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 16 listed in Table 59 that appears later in this application.

Table 31 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 31, and Table 32 below shows aspherical coefficients of the lenses of FIG. 31.

TABLE 31 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.7211 0.6349 1.544 56.114 1.100 S2 Lens 13.3234 0.1017 1.041 S3 Second −1000.000 0.2000 1.661 20.353 1.021 S4 (Stop) Lens 4.7361 0.1000 0.971 S5 Third 4.6607 0.3335 1.544 56.114 1.051 S6 Lens 23.5464 0.2491 1.010 S7 Fourth 12.1969 0.2486 1.544 56.114 1.031 S8 Lens 12.3859 0.1797 1.085 S9 Fifth −6.4179 0.3796 1.651 21.494 1.086 S10 Lens −11.3291 0.4268 1.351 S11 Sixth 3.3788 0.6037 1.544 56.114 1.630 S12 Lens 3.1853 0.3029 2.358 S13 Seventh 2.8749 0.4590 1.544 56.114 2.627 S14 Lens 1.6812 0.1384 2.733 S15 Filter Infinity 0.2100 3.185 S16 Infinity 0.5476 3.252 S17 Imaging Infinity 0.0024 3.535 Plane

TABLE 32 K A B C D E F G H S1 0.0403 −0.0033 −0.0288 0.0988 −0.2438 0.3505 −0.2995 0.1381 −0.0267 S2 −26.097 −0.0597 0.0465 0.0268 −0.202 0.3784 −0.3814 0.2052 −0.0463 S3 99 −0.1306 0.1983 −0.2114 0.1341 −0.0049 −0.0843 0.0757 −0.023 S4 −19.357 −0.0963 0.1414 −0.236 0.3578 −0.4974 0.5023 −0.2728 0.0568 S5 −1.8755 −0.0377 0.0445 −0.2833 0.9605 −1.7724 1.943 −1.1128 0.2597 S6 −97.267 −0.0529 0.0313 −0.2548 1.0857 −2.415 3.0964 −2.1094 0.6073 S7 −66.305 −0.17 −0.0426 −0.154 0.6893 −1.226 1.3135 −0.812 0.2308 S8 19.549 −0.118 −0.0141 −0.2387 0.7519 −1.0285 0.7605 −0.3206 0.0656 S9 31.916 −0.0788 0.1058 −0.2912 0.4792 −0.4459 0.1766 −0.0286 0 S10 −63.754 −0.1368 0.1339 −0.1769 0.2186 −0.1722 0.0666 −0.0093 0 S11 −43.951 0.0043 −0.1404 0.1501 −0.1184 0.0635 −0.0201 0.0026 0 S12 −31.504 0.0123 −0.0407 0.0204 −0.005 0.0006 −2E−05 −2E−06 0 S13 −0.5356 −0.2928 0.1691 −0.069 0.0202 −0.0039 0.0005 −3E−05 8E−07 S14 −0.8282 −0.2671 0.1453 −0.0648 0.0205 −0.0043 0.0006 −4E−05 1E−06

Seventeenth Example

FIG. 33 is a view illustrating a seventeenth example of an optical imaging system, and FIG. 34 illustrates aberration curves of the optical imaging system of FIG. 33.

An optical imaging system 17 includes a first lens 1017, a second lens 2017, a third lens 3017, a fourth lens 4017, a fifth lens 5017, a sixth lens 6017, and a seventh lens 7017.

The first lens 1017 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2017 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3017 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4017 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5017 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6017 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6017. The seventh lens 7017 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7017.

The optical imaging system 17 further includes a stop, a filter 8017, and an image sensor 9017. The stop is disposed between the first lens 1017 and the second lens 2017 to adjust an amount of light incident onto the image sensor 9017. The filter 8017 is disposed between the seventh lens 7017 and the image sensor 9017 to block infrared rays. The image sensor 9017 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 33, the stop is disposed at a distance of 0.683 mm from the object-side surface of the first lens 1017 toward the imaging plane of the optical imaging system 17. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 17 listed in Table 59 that appears later in this application.

Table 33 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 33, and Table 34 below shows aspherical coefficients of the lenses of FIG. 33.

TABLE 33 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.7502 0.6827 1.544 56.114 1.230 S2 (Stop) Lens 7.4508 0.1001 1.166 S3 Second 5.3770 0.2200 1.661 20.353 1.155 S4 Lens 2.7475 0.3546 1.100 S5 Third 6.4235 0.4429 1.544 56.114 1.138 S6 Lens 11.4085 0.2358 1.265 S7 Fourth 9.7643 0.2971 1.544 56.114 1.301 S8 Lens 21.6599 0.2322 1.450 S9 Fifth −3.7199 0.2363 1.544 56.114 1.529 S10 Lens −3.8701 0.1000 1.732 S11 Sixth 5.6702 0.5693 1.544 56.114 2.050 S12 Lens −2.6494 0.3771 2.354 S13 Seventh −6.4349 0.3200 1.544 56.114 2.711 S14 Lens 1.6732 0.1493 2.940 S15 Filter Infinity 0.1100 3.194 S16 Infinity 0.6300 3.226 S17 Imaging Infinity 0.0200 3.529 Plane

TABLE 34 K A B C D E F G H J S1 −0.804 0.0156 0.0271 −0.0389 0.0148 0.0472 −0.0717 0.0398 −0.0082 0 S2 8.8405 −0.0655 0.0311 0.1425 −0.424 0.5691 −0.4286 0.1738 −0.0297 0 S3 −12.163 −0.141 0.214 −0.1913 0.1405 −0.0962 0.0577 −0.0201 0.0025 0 S4 −0.4248 −0.0825 0.07 0.3355 −1.1524 1.8742 −1.6953 0.823 −0.1654 0 S5 0 −0.0664 0.0699 −0.2385 0.3963 −0.4248 0.2636 −0.0832 0.0101 0 S6 0 −0.0849 0.0295 −0.0243 −0.1324 0.2622 −0.2505 0.1282 −0.0271 0 S7 47.712 −0.1968 0.1845 −0.4516 0.7265 −0.7784 0.4942 −0.1584 0.0188 0 S8 85.667 −0.1837 0.2201 −0.4192 0.411 −0.1856 0.0288 0.0034 −0.001 0 S9 −99 −0.2337 0.709 −1.2742 1.1966 −0.6217 0.1784 −0.0262 0.0015 0 S10 0.797 0.0272 0.0522 −0.2244 0.1994 −0.0797 0.0164 −0.0017  7E−05 0 S11 −98.299 0.163 −0.2325 0.1653 −0.0832 0.026 −0.0046 0.0004 −2E−05 0 S12 −4.1083 0.2226 −0.2311 0.1457 −0.0646 0.0193 −0.0035 0.0004 −1E−05 0 S13 −0.7417 −0.0584 −0.1316 0.1263 −0.0468 0.0093 −0.001 6E−05 −2E−06 0 S14 −1.2275 −0.2296 0.1081 −0.0388 0.0105 −0.002 0.0003 −2E−05  8E−07 −1E−08

Eighteenth Example

FIG. 35 is a view illustrating an eighteenth example of an optical imaging system, and FIG. 36 illustrates aberration curves of the optical imaging system of FIG. 35.

An optical imaging system 18 includes a first lens 1018, a second lens 2018, a third lens 3018, a fourth lens 4018, a fifth lens 5018, a sixth lens 6018, and a seventh lens 7018.

The first lens 1018 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2018 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3018 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4018 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5018 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6018 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6018. The seventh lens 7018 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7018.

The optical imaging system 18 further includes a stop, a filter 8018, and an image sensor 9018. The stop is disposed between the first lens 1018 and the second lens 2018 to adjust an amount of light incident onto the image sensor 9018. The filter 8018 is disposed between the seventh lens 7018 and the image sensor 9018 to block infrared rays. The image sensor 9018 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 35, the stop is disposed at a distance of 0.250 mm from the object-side surface of the first lens 1018 toward the imaging plane of the optical imaging system 18. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 18 listed in Table 59 that appears later in this application.

Table 35 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 35, and Table 36 below shows aspherical coefficients of the lenses of FIG. 35.

TABLE 35 Effective Surface Radius of Thickness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 (Stop) First 1.7211 0.6349 1.544 56.114 1.100 S2 Lens 11.4571 0.1212 1.071 S3 Second 119.1721 0.2033 1.661 20.353 1.057 S4 Lens 4.4758 0.0843 1.043 S5 Third 4.5258 0.3109 1.544 56.114 1.051 S6 Lens 20.6082 0.2158 1.015 S7 Fourth 13.2152 0.2369 1.544 56.114 1.019 S8 Lens 16.2733 0.2103 1.070 S9 Fifth −6.5732 0.4119 1.651 21.494 1.076 S10 Lens −10.4553 0.3710 1.320 S11 Sixth 3.4779 0.6318 1.544 56.114 1.556 S12 Lens 3.1994 0.2672 2.337 S13 Seventh 2.8804 0.5060 1.544 56.114 2.489 S14 Lens 1.7054 0.1384 2.666 S15 Filter Infinity 0.2100 3.102 S16 Infinity 0.5794 3.177 S17 Imaging Infinity 0.0106 3.529 Plane

TABLE 36 K A B C D E F G H S1 0.0432 −0.0088 0.0131 −0.0627 0.1199 −0.1345 0.077 −0.018 −0.0004 S2 −26.097 −0.0562 0.051 −0.0514 0.0595 −0.0683 0.0462 −0.0139 −7E−05 S3 −99 −0.1283 0.1953 −0.2779 0.5135 −0.8812 0.9662 −0.5723 0.1395 S4 −16.567 −0.0971 0.1552 −0.3608 0.985 −2.059 2.5647 −1.6683 0.4378 S5 −1.6774 −0.0377 0.065 −0.4515 1.687 −3.5163 4.2391 −2.6607 0.6752 S6 57.913 −0.0559 0.0533 −0.341 1.3373 −2.8539 3.4811 −2.2114 0.5781 S7 −66.305 −0.1749 −0.0635 0.0963 −0.2061 0.5819 −0.9 0.6874 −0.1979 S8 19.549 −0.1228 −0.0686 0.0207 0.1647 −0.2695 0.1725 −0.0616 0.0161 S9 29.709 −0.0709 0.0826 −0.3062 0.6009 −0.6459 0.3344 −0.0761 0 S10 −31.338 −0.1255 0.1076 −0.1494 0.1908 −0.1423 0.0506 −0.0065 0 S11 −46.453 0.0038 −0.1455 0.1534 −0.126 0.0705 −0.0225 0.0029 0 S12 −31.504 0.0093 −0.0326 0.0149 −0.0033 0.0003 −1E−05 −7E−07 0 S13 −0.5233 −0.2947 0.1709 −0.0627 0.0154 −0.0025 0.0003 −1E−05  3E−07 S14 −0.8257 −0.2584 0.1353 −0.0565 0.0166 −0.0032 0.0004 −3E−05  7E−07

Nineteenth Example

FIG. 37 is a view illustrating a nineteenth example of an optical imaging system, and FIG. 38 illustrates aberration curves of the optical imaging system of FIG. 37.

An optical imaging system 19 includes a first lens 1019, a second lens 2019, a third lens 3019, a fourth lens 4019, a fifth lens 5019, a sixth lens 6019, and a seventh lens 7019.

The first lens 1019 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2019 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3019 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4019 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The fifth lens 5019 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6019 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6019. The seventh lens 7019 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7019.

The optical imaging system 19 further includes a stop, a filter 8019, and an image sensor 9019. The stop is disposed between the first lens 1019 and the second lens 2019 to adjust an amount of light incident onto the image sensor 9019. The filter 8019 is disposed between the seventh lens 7019 and the image sensor 9019 to block infrared rays. The image sensor 9019 forms an imaging plane on which an image of the subject is formed.

Table 37 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 37, and Table 38 below shows aspherical coefficients of the lenses of FIG. 37.

TABLE 37 Index Effective Surface Radius of Thickness/ of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.7773 0.6238 1.544 56.114 1.217 S2 (Stop) Lens 6.4566 0.1000 1.158 S3 Second 4.4103 0.2363 1.661 20.353 1.157 S4 Lens 2.6584 0.4138 1.184 S5 Third 6.5879 0.4640 1.544 56.114 1.177 S6 Lens 10.5233 0.1777 1.282 S7 Fourth 13.4749 0.3627 1.544 56.114 1.306 S8 Lens −20.2300 0.2325 1.444 S9 Fifth −3.1831 0.2000 1.661 20.353 1.456 S10 Lens −4.2151 0.1000 1.625 S11 Sixth 6.7646 0.6089 1.544 56.114 2.207 S12 Lens −2.8792 0.4211 2.145 S13 Seventh −6.9958 0.3200 1.544 56.114 2.280 S14 Lens 1.6934 0.1485 3.165 S15 Filter Infinity 0.1100 2.850 S16 Infinity 0.7007 2.888 S17 Imaging Infinity −0.0200 3.276 Plane

TABLE 38 K A B C D E F G H J S1 −0.5383 0.0108 0.0209 −0.0477 0.0729 −0.06 0.0243 −0.0027 −0.0007 0 S2 5.8135 −0.0459 0.0189 0.0248 −0.0559 0.0486 −0.026 0.0094 −0.0019 0 S3 −10.011 −0.085 0.066 0.02 −0.0808 0.0756 −0.0332 0.0069 −0.0006 0 S4 −0.1875 −0.0544 0.0068 0.26 −0.6655 0.9329 −0.7519 0.3313 −0.061 0 S5 0 −0.0569 0.0063 −0.0275 −0.0046 0.0401 −0.0485 0.0264 −0.0053 0 S6 0 −0.0775 −0.0976 0.271 −0.5329 0.5567 −0.3323 0.1128 −0.0176 0 S7 47.015 −0.0863 −0.1024 0.2298 −0.2721 0.1091 0.0392 −0.0378 0.0065 0 S8 −99 −0.0603 −0.0348 0.057 −0.0468 0.0241 −0.007 0.001 −6E−05 0 S9 −99 −0.2672 0.6153 −0.9745 0.9138 −0.5236 0.1786 −0.0332 0.0026 0 S10 −0.0701 0.0268 −0.0377 −0.0253 0.035 −0.0133 0.0024 −0.0002  7E−06 0 S11 −97.721 0.1556 −0.2109 0.1424 −0.0678 0.02 −0.0033 0.0003 −1E−05 0 S12 −1.5998 0.2298 −0.1811 0.0905 −0.0342 0.0088 −0.0014 0.0001 −4E−06 0 S13 4.8341 −0.1142 −0.0024 0.0306 −0.013 0.0027 −0.0003  2E−05 −5E−07 0 S14 −1.0993 −0.2618 0.1449 −0.0599 0.0171 −0.0032 0.0004 −3E−05  1E−06 −2E−08

Twentieth Example

FIG. 39 is a view illustrating a twentieth example of an optical imaging system, and FIG. 40 illustrates aberration curves of the optical imaging system of FIG. 39.

An optical imaging system 20 includes a first lens 1020, a second lens 2020, a third lens 3020, a fourth lens 4020, a fifth lens 5020, a sixth lens 6020, and a seventh lens 7020.

The first lens 1020 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2020 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3020 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4020 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5020 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6020 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6020. The seventh lens 7020 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, no inflection point is formed on the object-side surface of the seventh lens 7020, and one inflection point is formed on the image-side surface of the seventh lens 7020.

The optical imaging system 20 further includes a stop, a filter 8020, and an image sensor 9020. The stop is disposed between the first lens 1020 and the second lens 2020 to adjust an amount of light incident onto the image sensor 9020. The filter 8020 is disposed between the seventh lens 7020 and the image sensor 9020 to block infrared rays. The image sensor 9020 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 39, the stop is disposed at a distance of 0.641 mm from the object-side surface of the first lens 1020 toward the imaging plane of the optical imaging system 20. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 20 listed in Table 59 that appears later in this application.

Table 39 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 39, and Table 40 below shows aspherical coefficients of the lenses of FIG. 39.

TABLE 39 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.7977 0.6409 1.544 56.114 1.270 S2 Lens 3.7422 0.1191 1.211 (Stop) S3 Second 3.0573 0.2200 1.661 20.353 1.190 S4 Lens 2.7951 0.3931 1.130 S5 Third 10.6215 0.4640 1.544 56.114 1.153 S6 Lens 9.0266 0.1000 1.289 S7 Fourth 7.9876 0.3621 1.544 56.114 1.328 S8 Lens 138.7678 0.2334 1.454 S9 Fifth −4.1765 0.2198 1.661 20.353 1.518  S10 Lens −4.1394 0.1000 1.656  S11 Sixth 4.6134 0.6089 1.544 56.114 2.000  S12 Lens −3.5921 0.4726 2.038  S13 Seventh −7.0016 0.3200 1.544 56.114 2.049  S14 Lens 1.6938 0.1107 2.685  S15 Filter Infinity 0.2100 2.942  S16 Infinity 0.5300 3.008  S17 Imaging Infinity 0.0200 3.292 Plane

TABLE 40 K A B C D E F G H J S1 −0.812 0.0136 0.0311 −0.0769 0.1226 −0.1099 0.0531 −0.0116 0.0005 0 S2 −6.6917 −0.0631 0.0174 0.0714 −0.1648 0.1763 −0.1086 0.0376 −0.0059 0 S3 −14.579 −0.0707 0.0068 0.1319 −0.2129 0.173 −0.0715 0.0127 −0.0005 0 S4 −0.188 −0.0614 −0.0138 0.3338 −0.7392 0.9251 −0.6781 0.276 −0.0477 0 S5 0 −0.0572 0.0435 −0.1733 0.2724 −0.2421 0.0931 −0.0042 −0.0038 0 S6 0 −0.1356 −0.0309 0.2183 −0.5547 0.6931 −0.486 0.1856 −0.0304 0 S7 30.023 −0.2107 0.0007 0.1568 −0.2854 0.2586 −0.1154 0.0236 −0.0019 0 S8 −99 −0.1858 −0.0192 0.2616 −0.4111 0.3392 −0.1538 0.0357 −0.0033 0 S9 −98.995 −0.2935 0.5043 −0.5157 0.2657 −0.0658 0.0056 0.0005 −8E−05 0  S10 −0.0701 −0.0775 0.2223 −0.2703 0.1529 −0.0452 0.0073 −0.0006  2E−05 0  S11 −97.878 0.1479 −0.1956 0.1288 −0.0598 0.0172 −0.0028 0.0002 −8E−06 0  S12 1.4166 0.1234 −0.1416 0.087 −0.0341 0.0088 −0.0014 0.0001 −4E−06 0  S13 9.5503 −0.2864 0.1096 0.0149 −0.0214 0.0064 −0.0009  6E−05 −2E−06 0  S14 −1.2786 −0.3076 0.1777 −0.0626 0.0143 −0.0022 0.0002 −1E−05  5E−07 −7E−09

Twenty-First Example

FIG. 41 is a view illustrating a twenty-first example of an optical imaging system, and FIG. 42 illustrates aberration curves of the optical imaging system of FIG. 41.

An optical imaging system 21 includes a first lens 1021, a second lens 2021, a third lens 3021, a fourth lens 4021, a fifth lens 5021, a sixth lens 6021, and a seventh lens 7021.

The first lens 1021 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2021 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3021 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4021 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The fifth lens 5021 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6021 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6021. The seventh lens 7021 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7021.

The optical imaging system 21 further includes a stop, a filter 8021, and an image sensor 9021. The stop is disposed between the second lens 2021 and the third lens 3021 to adjust an amount of light incident onto the image sensor 9021. The filter 8021 is disposed between the seventh lens 7021 and the image sensor 9021 to block infrared rays. The image sensor 9021 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 41, the stop is disposed at a distance of 0.920 mm from the object-side surface of the first lens 1021 toward the imaging plane of the optical imaging system 21. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 21 listed in Table 59 that appears later in this application.

Table 41 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 41, and Table 42 below shows aspherical coefficients of the lenses of FIG. 41.

TABLE 41 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.6723 0.7383 1.547 56.114 1.350 S2 Lens 6.8570 0.0200 1.277 S3 Second 2.1918 0.1620 1.660 20.400 1.154 S4 Lens 1.6162 0.3610 1.020 (Stop) S5 Third 4.2114 0.1981 1.660 20.400 0.993 S6 Lens 3.7067 0.1568 1.063 S7 Fourth 13.0598 0.4170 1.547 56.114 1.137 S8 Lens −10.8786 0.3033 1.259 S9 Fifth −7.2645 0.2508 1.650 21.494 1.350  S10 Lens −20.0451 0.1210 1.730  S11 Sixth 6.6528 0.8628 1.650 21.494 1.734  S12 Lens 6.2317 0.1408 2.304  S13 Seventh 2.1121 0.6671 1.537 55.711 3.101  S14 Lens 1.5460 0.1957 2.902  S15 Filter Infinity 0.1200 3.189  S16 Infinity 0.5150 3.230  S17 Imaging Infinity 0.0150 3.542 Plane

TABLE 42 K A B C D E F G H J S1 −0.0875 0.0043 0.0051 −0.0107 0.0157 −0.0116 0.0042 −0.0006 0 0 S2 25.239 −0.0649 0.2073 −0.4137 0.472 −0.3196 0.119 −0.019 0 0 S3 −1.7461 −0.1041 0.3118 −0.5508 0.6169 −0.4129 0.1566 −0.0264 0 0 S4 −0.0238 −0.0685 0.11 −0.0081 −0.2137 0.4018 −0.2921 0.0875 0 0 S5 0.8405 −0.0823 0.0538 −0.0046 −0.0765 0.1601 −0.1299 0.0421 0 0 S6 6.608 −0.1086 0.0588 −0.0507 0.048 −0.0168 0.001 0.0003 0 0 S7 21.918 −0.0385 −0.0011 0.0112 −0.0177 0.0301 −0.0163 0.0027 0 0 S8 25.736 −0.0248 −0.0082 −0.0047 0.0083 −0.0029 0.0004 −2E−05 0 0 S9 1.6857 −0.0267 0.0322 −0.1034 0.0865 −0.0378 0.0096 −0.0012 0 0  S10 69.409 −0.0298 0.003 −0.0334 0.0256 −0.0076 0.001 −5E−05 0 0  S11 −52.836 0.0057 −0.0573 0.0402 −0.0183 0.0046 −0.0006  3E−05 0 0  S12 −34.09 −0.0239 −0.0095 0.0073 −0.0028 0.0006 −6E−05  3E−06 0 0  S13 −0.9427 −0.2417 0.0607 −0.0015 −0.0024 0.0006 −7E−05  4E−06 −8E−08 0  S14 −1.0048 −0.2102 0.0796 −0.0236 0.0052 −0.0008  7E−05 −3E−06  7E−08 0

Twenty-Second Example

FIG. 43 is a view illustrating a twenty-second example of an optical imaging system, and FIG. 44 illustrates aberration curves of the optical imaging system of FIG. 43.

An optical imaging system 22 includes a first lens 1022, a second lens 2022, a third lens 3022, a fourth lens 4022, a fifth lens 5022, a sixth lens 6022, and a seventh lens 7022.

The first lens 1022 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2022 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3022 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4022 has a positive refractive power, a convex object-side surface, and a convex image-side surface. The fifth lens 5022 has a negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6022 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6022. The seventh lens 7022 has a negative refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7022, and one inflection point is formed on the image-side surface of the seventh lens 7022.

The optical imaging system 22 further includes a stop, a filter 8022, and an image sensor 9022. The stop is disposed between the first lens 1022 and the second lens 2022 to adjust an amount of light incident onto the image sensor 9022. The filter 8022 is disposed between the seventh lens 7022 and the image sensor 9022 to block infrared rays. The image sensor 9022 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 43, the stop is disposed at a distance of 0.901 mm from the object-side surface of the first lens 1022 toward the imaging plane of the optical imaging system 22. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 22 listed in Table 59 that appears later in this application.

Table 43 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 43, and Table 44 below shows aspherical coefficients of the lenses of FIG. 43.

TABLE 43 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.8494 0.6370 1.547 56.114 1.390 S2 Lens 7.5507 0.0250 1.354 S3 Second 2.5063 0.2400 1.660 20.400 1.268 S4 Lens 1.7762 0.4546 1.120 (Stop) S5 Third 4.0806 0.1300 1.660 20.400 1.092 S6 Lens 3.9645 0.2866 1.129 S7 Fourth 12.4947 0.7725 1.547 56.114 1.335 S8 Lens −21.8846 0.4726 1.572 S9 Fifth −10.1915 0.2163 1.650 21.494 1.687  S10 Lens −23.7853 0.0943 1.903  S11 Sixth 6.4332 0.7822 1.650 21.494 2.098  S12 Lens 6.0490 0.2542 2.601  S13 Seventh 2.2224 0.6031 1.537 55.711 3.411  S14 Lens 1.6113 0.2500 3.363  S15 Filter Infinity 0.1100 3.617  S16 Infinity 0.5075 3.653  S17 Imaging Infinity 0.0150 3.936 Plane

TABLE 44 K A B C D E F G H J S1 −0.0815 0.0055 0.0014 −0.0029 0.0061 −0.0051 0.002 −0.0003 0 0 S2 25.622 −0.0509 0.133 −0.2101 0.1935 −0.1078 0.0334 −0.0045 0 0 S3 −1.7225 −0.0688 0.1585 −0.2156 0.1892 −0.1009 0.0303 −0.004 0 0 S4 0.011 −0.0397 0.0365 0.0313 −0.0936 0.1109 −0.0595 0.0137 0 0 S5 0.49 −0.0743 0.0501 −0.0466 0.0606 −0.0386 0.013 −0.0015 0 0 S6 7.0482 −0.0885 0.0384 −0.0259 0.0308 −0.0159 0.0036 −0.0003 0 0 S7 21.918 −0.0229 0.0042 −0.0033 0.0044 −0.0002 −0.0006 0.0001 0 0 S8 25.736 −0.0244 0.007 −0.0107 0.0065 −0.0016 0.0002 −7E−06 0 0 S9 1.6857 −0.0527 0.078 −0.0871 0.0455 −0.0137 0.0025 −0.0002 0 0  S10 76.281 −0.0552 0.0643 −0.0583 0.0243 −0.005 0.0005 −2E−05 0 0  S11 −52.836 0.0115 −0.0347 0.0203 −0.0087 0.0021 −0.0002  1E−05 0 0  S12 0 −0.0339 −0.0007 0.0021 −0.0008 8E−05  1E−05 −4E−06  3E−07 −9E−09  S13 −0.9427 −0.1816 0.0377 −0.0008 −0.001 0.0002 −2E−05  9E−07 −2E−08 0  S14 −1.0048 −0.1579 0.0494 −0.0121 0.0022 −0.0003  2E−05 −8E−07  1E−08 0

Twenty-Third Example

FIG. 45 is a view illustrating a twenty-third example of an optical imaging system, and FIG. 46 illustrates aberration curves of the optical imaging system of FIG. 45.

An optical imaging system 23 includes a first lens 1023, a second lens 2023, a third lens 3023, a fourth lens 4023, a fifth lens 5023, a sixth lens 6023, and a seventh lens 7023.

The first lens 1023 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2023 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3023 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4023 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5023 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6023 has a positive refractive power, a convex object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6023. The seventh lens 7023 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7023.

The optical imaging system 23 further includes a stop, a filter 8023, and an image sensor 9023. The stop is disposed between the first lens 1023 and the second lens 2023 to adjust an amount of light incident onto the image sensor 9023. The filter 8023 is disposed between the seventh lens 7023 and the image sensor 9023 to block infrared rays. The image sensor 9023 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 45, the stop is disposed at a distance of 1.051 mm from the object-side surface of the first lens 1023 toward the imaging plane of the optical imaging system 23. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 23 listed in Table 59 that appears later in this application.

Table 45 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 45, and Table 46 below shows aspherical coefficients of the lenses of FIG. 45.

TABLE 45 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.8221 0.5822 1.544 56.114 1.275 S2 Lens 4.8276 0.0564 1.231 S3 Second 4.5461 0.3826 1.544 56.114 1.199 S4 Lens 15.5127 0.0300 1.152 S5 Third 3.9113 0.2000 1.661 20.350 1.086 (Stop) Lens S6 2.2301 0.3911 1.050 S7 Fourth 14.8039 0.3510 1.544 56.114 1.050 S8 Lens 6.0045 0.0516 1.178 S9 Fifth 4.0426 0.2943 1.639 21.525 1.235  S10 Lens 6.0069 0.3029 1.433  S11 Sixth 50.3009 0.5717 1.544 56.114 1.650  S12 Lens −1.4551 0.3562 2.029  S13 Seventh −3.9227 0.3400 1.544 56.114 2.473  S14 Lens 1.8149 0.1800 2.629  S15 Filter Infinity 0.2100 1.518 64.197  S16 Infinity 0.6200  S17 Imaging Infinity 0.0200 Plane

TABLE 46 K A B C D E F G H S1 −1.7971 0.02 0.0153 −0.0575 0.0794 −0.0689 0.0296 −0.0048 0 S2 0 −0.0249 −0.1102 0.1727 −0.1632 0.1101 −0.0441 0.0076 0 S3 0 0.0215 −0.1293 0.2068 −0.2278 0.2 −0.1022 0.0204 0 S4 72.117 −0.0714 0.2664 −0.6184 0.7522 −0.5313 0.203 −0.0324 0 S5 −15.337 −0.2046 0.4728 −0.8108 0.9542 −0.6926 0.2852 −0.0496 0 S6 −5.3786 −0.102 0.2031 −0.1151 −0.1096 0.3352 −0.285 0.0916 0 S7 0 −0.0443 −0.0061 −0.1088 0.0952 −0.0067 −0.0694 0.0382 0 S8 0 −0.1919 0.079 0.0071 −0.1552 0.1775 −0.0954 0.0212 0 S9 −54.709 −0.2046 −0.0908 0.3474 −0.3213 0.1526 −0.0388 0.0033 0  S10 0 −0.1486 −0.156 0.3054 −0.2298 0.1087 −0.0342 0.0052 0  S11 0 0.0817 −0.1186 −0.0496 0.1291 −0.0835 0.0241 −0.0026 0  S12 −1.7559 0.2122 −0.171 0.0184 0.0388 −0.0196 0.0037 −0.0003 0  S13 −4.6993 0.0063 −0.2121 0.1837 −0.071 0.0154 −0.0019 0.0001 −4E−06  S14 −1.1263 −0.2142 0.0916 −0.0298 0.0072 −0.0012 0.0001 −9E−06  3E−07

Twenty-Fourth Example

FIG. 47 is a view illustrating a twenty-fourth example of an optical imaging system, and FIG. 48 illustrates aberration curves of the optical imaging system of FIG. 47.

An optical imaging system 24 includes a first lens 1024, a second lens 2024, a third lens 3024, a fourth lens 4024, a fifth lens 5024, a sixth lens 6024, and a seventh lens 7024.

The first lens 1024 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2024 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3024 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4024 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5024 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6024 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on the object-side surface and the image-side surface of the sixth lens 6024. The seventh lens 7024 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7024, and one inflection point is formed on the image-side surface of the seventh lens 7024.

The optical imaging system 24 further includes a stop, a filter 8024, and an image sensor 9024. The stop is disposed between the second lens 2024 and the third lens 3024 to adjust an amount of light incident onto the image sensor 9024. The filter 8024 is disposed between the seventh lens 7024 and the image sensor 9024 to block infrared rays. The image sensor 9024 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 47, the stop is disposed at a distance of 1.128 mm from the object-side surface of the first lens 1024 toward the imaging plane of the optical imaging system 24. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 24 listed in Table 59 that appears later in this application.

Table 47 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 47, and Table 48 below shows aspherical coefficients of the lenses of FIG. 47.

TABLE 47 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 2.1378 0.4606 1.546 56.114 1.360 S2 Lens 2.7210 0.0424 1.346 S3 Second 2.7717 0.6000 1.546 56.114 1.322 S4 Lens 33.8379 0.0250 1.253 S5 Third 5.9058 0.2300 1.679 19.236 1.199 (Stop) Lens S6 2.9580 0.3150 1.193 S7 Fourth 6.7061 0.5156 1.546 56.114 1.246 S8 Lens 15.6197 0.4883 1.350 S9 Fifth 9.4476 0.3912 1.679 19.236 1.600  S10 Lens 5.2667 0.1323 2.100  S11 Sixth 2.4900 0.4534 1.546 56.114 1.951  S12 Lens 2.6058 0.1501 2.440  S13 Seventh 1.4290 0.5074 1.546 56.114 2.691  S14 Lens 1.2861 0.4042 2.841  S15 Filter Infinity 0.2100 1.518 64.197 3.245  S16 Infinity 0.6767 3.316  S17 Imaging Infinity 0.0150 3.733 Plane

TABLE 48 K A B C D E F G H J S1 −0.9855 −0.0214 0.0439 −0.0925 0.0633 0.0064 −0.0479 0.0372 −0.0126 0.0016 S2 −12.849 0.0234 −0.0441 −0.1546 −0.0352 0.7096 −1.0004 0.6322 −0.1959 0.0242 S3 −1.1002 −0.0276 0.0854 −0.4269 0.4011 0.3152 −0.8128 0.5995 −0.2021 0.0266 S4 −7.367 −0.1684 1.4677 −5.7804 12.64 −16.742 13.734 −6.8183 1.8769 −0.22 S5 9.3187 −0.2245 1.5162 −5.8569 13.059 −17.823 15.121 −7.7778 2.2231 −0.2714 S6 1.6265 −0.0856 0.2704 −0.9806 2.415 −3.7649 3.6777 −2.1905 0.7327 −0.1058 S7 −4.7815 0.0264 −0.5178 1.9131 −4.2532 5.8667 −5.0521 2.6239 −0.7455 0.0886 S8 5.8592 −0.0338 −0.0317 0.0097 0.0291 −0.0644 0.0612 −0.0311 0.0084 −0.0008 S9 −43.521 −0.002 −0.0021 0.0436 −0.1236 0.1389 −0.0871 0.0311 −0.0059 0.0005  S10 −12.729 −0.0608 0.0286 0.0052 −0.0244 0.0182 −0.0074 0.0018 −0.0002  1E−05  S11 −16.199 0.1227 −0.2762 0.2845 −0.2154 0.1043 −0.0311 0.0056 −0.0006  2E−05  S12 0.0242 −0.0902 0.058 −0.0568 0.029 −0.0088 0.0017 −0.0002 2E−05 −5E−07  S13 −0.8394 −0.4114 0.2062 −0.0647 0.0137 −0.0021 0.0003 −2E−05 2E−06 −5E−08  S14 −1.3743 −0.2983 0.1734 −0.0777 0.0258 −0.006 0.0009 −9E−05 5E−06 −1E−07

Twenty-Fifth Example

FIG. 49 is a view illustrating a twenty-fifth example of an optical imaging system, and FIG. 50 illustrates aberration curves of the optical imaging system of FIG. 49.

An optical imaging system 25 includes a first lens 1025, a second lens 2025, a third lens 3025, a fourth lens 4025, a fifth lens 5025, a sixth lens 6025, and a seventh lens 7025.

The first lens 1025 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2025 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3025 has a negative refractive power, a convex object-side surface, and a concave image-side surface.

The fourth lens 4025 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5025 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6025 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6025. The seventh lens 7025 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, one inflection point is formed on each of the object-side surface and the image-side surface of the seventh lens 7025.

The optical imaging system 25 further includes a stop, a filter 8025, and an image sensor 9025. The stop is disposed between the second lens 2025 and the third lens 3025 to adjust an amount of light incident onto the image sensor 9025. The filter 8025 is disposed between the seventh lens 7025 and the image sensor 9025 to block infrared rays. The image sensor 9025 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 49, the stop is disposed at a distance of 0.963 mm from the object-side surface of the first lens 1025 toward the imaging plane of the optical imaging system 25. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 25 listed in Table 59 that appears later in this application.

Table 49 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 49, and Table 50 below shows aspherical coefficients of the lenses of FIG. 49.

TABLE 49 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.7493 0.7080 1.546 56.114 1.280 S2 Lens 7.7627 0.0250 1.225 S3 Second 3.6883 0.2300 1.667 20.353 1.160 S4 Lens 2.4524 0.3551 1.033 (Stop) S5 Third 39.9140 0.2300 1.667 20.353 1.053 S6 Lens 22.4233 0.0250 1.090 S7 Fourth 6.6877 0.3582 1.546 56.114 1.130 S8 Lens 17.1426 0.3932 1.201 S9 Fifth 10.0343 0.3525 1.656 21.525 1.329  S10 Lens 6.5555 0.2520 1.664  S11 Sixth −324.8644 0.6107 1.656 21.525 1.841  S12 Lens 12.2860 0.0342 2.288  S13 Seventh 1.9518 0.8257 1.536 55.656 2.578  S14 Lens 1.7567 0.2187 2.963  S15 Filter Infinity 0.2100 1.518 64.197 3.258  S16 Infinity 0.6350 3.334  S17 Imaging Infinity 0.0150 3.729 Plane

TABLE 50 K A B C D E F G H J S1 −0.2398 5E−05 0.0225 −0.0553 0.0791 −0.0725 0.0408 −0.0137 0.0019 0 S2 6.0424 −0.0363 0.0343 0.0144 −0.1124 0.1667 −0.1307 0.054 −0.0092 0 S3 −1.7137 −0.0472 0.041 0.0264 −0.116 0.1895 −0.1701 0.0827 −0.0161 0 S4 −0.2358 −0.0167 −0.01 0.0564 −0.0195 −0.1069 0.2279 −0.1897 0.0625 0 S5 −0.0716 −0.0169 −0.0047 −0.1892 0.6295 −1.0256 0.9612 −0.4977 0.1127 0 S6 −1.1573 0.0199 −0.1372 0.1444 −0.0555 0.1408 −0.2746 0.2067 −0.0539 0 S7 −28.459 0.0213 −0.1017 0.0611 0.0456 0.018 −0.1503 0.1307 −0.0346 0 S8 −2.3038 −0.0386 0.0394 −0.1206 0.2443 −0.4112 0.4746 −0.3301 0.1229 −0.018207 S9 −3.3254 −0.1025 0.044 −0.1067 0.238 −0.3262 0.2409 −0.0929 0.0146 0  S10 −25.215 −0.0274 −0.1331 0.1909 −0.1562 0.0771 −0.0231 0.0041 −0.0003 0  S11 23.202 0.1679 −0.2882 0.2414 −0.1422 0.0533 −0.0119 0.0015 −8E−05 0  S12 −49.948 0.0068 −0.0175 0.0027 0.0001 −0.0001 4E−05 −6E−06  4E−07 0  S13 −1.9292 −0.2614 0.126 −0.0405 0.0094 −0.0015 0.0002 −9E−06  2E−07 0  S14 −0.8288 −0.1737 0.0652 −0.0206 0.0046 −0.0007 6E−05 −3E−06  7E−08 0

Twenty-Sixth Example

FIG. 51 is a view illustrating a twenty-sixth example of an optical imaging system, and FIG. 52 illustrates aberration curves of the optical imaging system of FIG. 51.

An optical imaging system 26 includes a first lens 1026, a second lens 2026, a third lens 3026, a fourth lens 4026, a fifth lens 5026, a sixth lens 6026, and a seventh lens 7026.

The first lens 1026 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2026 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3026 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4026 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5026 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6026 has a positive refractive power, a concave object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6026. The seventh lens 7026 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, no inflection point is formed on the object-side surface of the seventh lens 7026, and one inflection point is formed on the image-side surface of the seventh lens 7026.

The optical imaging system 26 further includes a stop, a filter 8026, and an image sensor 9026. The stop is disposed between the first lens 1026 and the second lens 2026 to adjust an amount of light incident onto the image sensor 9026. The filter 8026 is disposed between the seventh lens 7026 and the image sensor 9026 to block infrared rays. The image sensor 9026 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 51, the stop is disposed at a distance of 0.857 mm from the object-side surface of the first lens 1026 toward the imaging plane of the optical imaging system 26. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 26 listed in Table 59 that appears later in this application.

Table 51 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 51, and Table 52 below shows aspherical coefficients of the lenses of FIG. 51.

TABLE 51 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.8263 0.7034 1.546 56.114 1.290 S2 Lens 7.7056 0.1540 1.215 S3 Second 4.6213 0.2200 1.679 19.236 1.127 (Stop) Lens S4 2.7291 0.3146 1.109 S5 Third 6.6824 0.4391 1.546 56.114 1.151 S6 Lens 11.7185 0.1811 1.250 S7 Fourth 6.8604 0.2500 1.679 19.236 1.259 S8 Lens 7.4620 0.4065 1.408 S9 Fifth −9.8497 0.5939 1.546 56.114 1.604  S10 Lens −1.8870 0.0250 1.970  S11 Sixth −41.8807 0.3701 1.546 56.114 2.299  S12 Lens −3.7454 0.2569 2.568  S13 Seventh −2.0634 0.3200 1.546 56.114 2.855  S14 Lens 2.6116 0.1554 3.055  S15 Filter Infinity 0.2100 1.518 64.197 3.346  S16 Infinity 0.6400 3.410  S17 Imaging Infinity 0.0100 3.730 Plane

TABLE 52 K A B C D E F G H J S1 −1.0945 0.0136 0.0506 −0.1839 0.416 −0.5839 0.51 −0.2705 0.0795081 −0.009965 S2 3.251 −0.0482 0.0508 −0.085 0.2198 −0.436 0.5133 −0.3477 0.1257908 −0.01888 S3 −13.699 −0.1155 0.1942 −0.4376 1.335 −2.7707 3.4839 −2.5718 1.0289235 −0.172343 S4 −4.0179 −0.0945 0.2406 −0.7546 2.4023 −4.9111 6.1463 −4.5679 1.8551655 −0.316824 S5 −6.6783 −0.0675 0.1229 −0.5308 1.3347 −2.1668 2.2329 −1.4059 0.4923477 −0.072919 S6 2.6687 −0.1089 0.0811 −0.1248 0.0166 0.1977 −0.3307 0.2573 −0.101655 0.0161788 S7 7.0258 −0.2027 0.0564 −0.0521 0.0446 −0.0418 0.0403 −0.0212 0.0010102 0.0016206 S8 −10.8 −0.1484 0.0297 −0.0692 0.1666 −0.2292 0.2033 −0.1109 0.0326486 −0.003833 S9 −26.465 0.0072 −0.0015 −0.1473 0.2748 −0.3047 0.2171 −0.0939 0.0218783 −0.002079  S10 −1.4915 0.1141 −0.2124 0.1883 −0.1127 0.0475 −0.0129 0.0021 −0.000178 6.324E−06  S11 −6.8308 0.0507 −0.1087 0.0643 −0.0416 0.0215 −0.0064 0.0011 −8.99E−05 3.109E−06  S12 −10.262 0.0544 0.062 −0.1082 0.0705 −0.0254 0.0054 −0.0007 4.337E−05 −1.18E−06  S13 −6.0066 0.0037 −0.0456 0.0731 −0.0405 0.0115 −0.0019 0.0002  −9.4E−06 2.077E−07  S14 −0.8095 −0.1128 0.0401 −0.0105 0.0011 0.0002 −7E−05 8E−06 −4.78E−07 1.015E−08

Twenty-Seventh Example

FIG. 53 is a view illustrating a twenty-seventh example of an optical imaging system, and FIG. 54 illustrates aberration curves of the optical imaging system of FIG. 53.

An optical imaging system 27 includes a first lens 1027, a second lens 2027, a third lens 3027, a fourth lens 4027, a fifth lens 5027, a sixth lens 6027, and a seventh lens 7027.

The first lens 1027 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2027 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3027 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4027 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5027 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6027 has a positive refractive power, a concave object-side surface, and a convex image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface, and the image-side surface of the sixth lens 6027. The seventh lens 7027 has a negative refractive power, a concave object-side surface, and a concave image-side surface. In addition, no inflection point is formed on the object-side surface of the seventh lens 7027, and one inflection point is formed on the image-side surface of the seventh lens 7027.

The optical imaging system 27 further includes a stop, a filter 8027, and an image sensor 9027. The stop is disposed between the second lens 2027 and the third lens 3027 to adjust an amount of light incident onto the image sensor 9027. The filter 8027 is disposed between the seventh lens 7027 and the image sensor 9027 to block infrared rays. The image sensor 9027 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 53, the stop is disposed at a distance of 0.872 mm from the object-side surface of the first lens 1027 toward the imaging plane of the optical imaging system 27. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 27 listed in Table 59 that appears later in this application.

Table 53 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 53, and Table 54 below shows aspherical coefficients of the lenses of FIG. 53.

TABLE 53 Index of Effective Surface Radius of Thickness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.7603 0.6172 1.546 56.114 1.100 S2 Lens 14.1233 0.0250 1.040 S3 Second 5.8341 0.2300 1.667 20.353 1.011 S4 Lens 3.1227 0.3733 0.919 (Stop) S5 Third −49.9417 0.3799 1.546 56.114 0.995 S6 Lens −15.1870 0.1809 1.096 S7 Fourth 23.3680 0.3032 1.667 20.353 1.124 S8 Lens 12.2098 0.3354 1.309 S9 Fifth −4.3948 0.4729 1.546 56.114 1.471  S10 Lens −1.5983 0.0250 1.698  S11 Sixth −6.0815 0.5447 1.546 56.114 1.822  S12 Lens −3.0145 0.2724 2.192  S13 Seventh −6.1494 0.4224 1.546 56.114 2.462  S14 Lens 1.6367 0.1933 2.880  S15 Filter Infinity 0.2100 1.518 64.197 3.223  S16 Infinity 0.6445 3.300  S17 Imaging Infinity 0.0099 3.728 Plane

TABLE 54 K A B C D E F G H J S1 −1.0054 0.0225 0.0222 −0.0696 0.1604 −0.2238 0.1806 −0.079105 0.0141246 0 S2 −1.5097 −0.1275 0.3975 −0.6982 0.6801 −0.322 0.0288 0.029035 −0.007638 0 S3 6.0294 −0.163 0.4504 −0.8514 1.0525 −0.8203 0.4235 −0.137998 0.0212967 0 S4 −0.8846 −0.0449 0.0393 0.1574 −0.6934 1.3171 −1.3069 0.6799499 −0.143027 0 S5 0 −0.0513 −0.0193 −0.016 0.0043 0.0034 −0.0155 0.0319206 −0.012784 0 S6 0 −0.1089 −0.0569 0.3576 −0.9255 1.1947 −0.8604 0.3322147 −0.054677 0 S7 −7.5 −0.2139 −0.0107 0.1788 −0.1827 −0.1159 0.3046 −0.189687 0.0404863 0 S8 −43.341 −0.1402 −0.061 0.2777 −0.4123 0.3523 −0.1857 0.0564073 −0.007106 0 S9 −35.081 −0.0602 0.0736 −0.1046 0.1084 −0.0726 0.0255 −0.004103 0.0002198 0 S10 −1.5734 0.1621 −0.2197 0.1896 −0.107 0.0396 −0.0091 0.0011297 −5.79E−05 0 S11 0.5153 0.2137 −0.3167 0.2399 −0.1217 0.0384 −0.0069 0.0006554  −2.5E−05 0 S12 −1.1466 0.1967 −0.2565 0.1542 −0.0532 0.0115 −0.0015 0.0001175 −3.88E−06 0 S13 −0.9056 −0.0077 −0.2094 0.1883 −0.0749 0.0167 −0.0022 0.000155  −4.7E−06 0 S14 −1.2797 −0.2192 0.1006 −0.0338 0.0088 −0.0018 0.0003 −2.44E−05 1.336E−06 −3.17E−08

Twenty-Eighth Example

FIG. 55 is a view illustrating a twenty-eighth example of an optical imaging system, and FIG. 56 illustrates aberration curves of the optical imaging system of FIG. 55.

An optical imaging system 28 includes a first lens 1028, a second lens 2028, a third lens 3028, a fourth lens 4028, a fifth lens 5028, a sixth lens 6028, and a seventh lens 7028.

The first lens 1028 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2028 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3028 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4028 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5028 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6028 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6028. The seventh lens 7028 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7028, and one inflection point is formed on the image-side surface of the seventh lens 7028.

The optical imaging system 28 further includes a stop, a filter 8028, and an image sensor 9028. The stop is disposed between the second lens 2028 and the third lens 3028 to adjust an amount of light incident onto the image sensor 9028. The filter 8028 is disposed between the seventh lens 7028 and the image sensor 9028 to block infrared rays. The image sensor 9028 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 55, the stop is disposed at a distance of 0.866 mm from the object-side surface of the first lens 1028 toward the imaging plane of the optical imaging system 28. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 28 listed in Table 59 that appears later in this application.

Table 55 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 55, and Table 56 below shows aspherical coefficients of the lenses of FIG. 55.

TABLE 55 Index Thick- of Effective Surface Radius of ness/ Refrac- Abbe Aperture No. Element Curvature Distance tion Number Radius S1 First 1.8830 0.5872 1.546 56.114 1.050 S2 Lens 18.0733 0.0492 0.962 S3 Second 4.5995 0.2300 1.667 20.353 0.934 S4 Lens 2.5464 0.3929 0.837 (Stop) S5 Third −21.7546 0.2745 1.546 56.114 1.100 S6 Lens −13.5144 0.0611 1.106 S7 Fourth 25.3349 0.2655 1.546 56.114 1.200 S8 Lens 25.3360 0.3710 1.285 S9 Fifth 9.4682 0.3930 1.656 21.525 1.500 S10 Lens 5.1029 0.3790 1.754 S11 Sixth 6.4162 0.8885 1.546 56.114 2.041 S12 Lens 6.3521 0.0460 2.631 S13 Seventh 1.9665 0.8854 1.536 55.656 3.050 S14 Lens 1.7699 0.3098 3.456 S15 Filter Infinity 0.2100 1.518 64.197 3.768 S16 Infinity 0.6537 3.829 S17 Imaging Infinity −0.0037   4.129 Plane

TABLE 56 K A B C D E F G H J S1 −0.1525 0.0035 0.0054 −0.0238 0.0587 −0.0925 0.0808 −0.0376 0.0069 0 S2 −36.188 −0.0554 0.191 −0.4954 0.9092 −1.1194 0.849 −0.3546 0.0617 0 S3 −0.1164 −0.0883 0.2264 −0.5273 0.9947 −1.274 1.0104 −0.4343 0.076 0 S4 0.3326 −0.0462 0.097 −0.2316 0.5455 −0.848 0.7854 −0.3759 0.0708 0 S5 51.758 −0.0119 −0.0911 0.3617 −0.9067 1.3845 −1.3014 0.6835 −0.1493 0 S6 42.164 0.0924 −0.5269 1.3558 −2.2584 2.5093 −1.8107 0.7611 −0.139 0 S7 −4.7579 0.1336 −0.5938 1.261 −1.8115 1.7924 −1.1666 0.4427 −0.0728 0 S8 −3.4393 0.0471 −0.1842 0.2886 −0.3575 0.3273 −0.1971 0.067 −0.0093 0 S9 −8.5449 −0.0502 −0.0588 0.1599 −0.2027 0.1398 −0.0542 0.0105 −0.0007 0 S10 −18.064 −0.044 −0.0734 0.1425 −0.1303 0.0691 −0.0217 0.0038 −0.0003 0 S11 −4.6497 0.0633 −0.1193 0.0882 −0.0426 0.0135 −0.0028 0.0004 −2E−05 0 S12 −50 0.034 −0.0497 0.0246 −0.0072 0.0013 −0.0001 7E−06 −2E−07 0 S13 −2.4291 −0.1201 0.0167 0.0022 −0.0009 0.0001 −6E−06 1E−07   9E−10 0 S14 −1.0032 −0.1111 0.0248 −0.0032 −0.0001 0.0001 −2E−05 2E−06 −8E−08 1E−09

Twenty-Ninth Example

FIG. 57 is a view illustrating a twenty-ninth example of an optical imaging system, and FIG. 58 illustrates aberration curves of the optical imaging system of FIG. 57.

An optical imaging system 29 includes a first lens 1029, a second lens 2029, a third lens 3029, a fourth lens 4029, a fifth lens 5029, a sixth lens 6029, and a seventh lens 7029.

The first lens 1029 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2029 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3029 has a positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4029 has a positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5029 has a negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6029 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, at least one inflection point is formed on either one or both of the object-side surface and the image-side surface of the sixth lens 6029. The seventh lens 7029 has a positive refractive power, a convex object-side surface, and a concave image-side surface. In addition, two inflection points are formed on the object-side surface of the seventh lens 7029, and one inflection point is formed on the image-side surface of the seventh lens 7029.

The optical imaging system 29 further includes a stop, a filter 8029, and an image sensor 9029. The stop is disposed between the second lens 2029 and the third lens 3029 to adjust an amount of light incident onto the image sensor 9029. The filter 8029 is disposed between the seventh lens 7029 and the image sensor 9029 to block infrared rays. The image sensor 9029 forms an imaging plane on which an image of the subject is formed. Although not illustrated in FIG. 57, the stop is disposed at a distance of 0.904 mm from the object-side surface of the first lens 1029 toward the imaging plane of the optical imaging system 29. This distance is equal to TTL-SL and can be calculated from the values of TTL and SL for Example 29 listed in Table 59 that appears later in this application.

Table 57 below shows physical properties of the lenses and other elements of the optical imaging system of FIG. 57, and Table 58 below shows aspherical coefficients of the lenses of FIG. 57.

TABLE 57 Thick- Effective Surface Radius of ness/ Index of Abbe Aperture No. Element Curvature Distance Refraction Number Radius S1 First 1.8987 0.6486 1.546 56.114 1.260 S2 Lens 7.3568 0.0250 1.216 S3 Second 3.8789 0.2300 1.667 20.353 1.161 S4 Lens 2.7620 0.3408 1.053 (Stop) S5 Third −50.1242 0.2819 1.546 56.114 1.120 S6 Lens −14.9889 0.0597 1.158 S7 Fourth 12.0498 0.2698 1.546 56.114 1.220 S8 Lens 12.5657 0.2919 1.320 S9 Fifth 9.5926 0.3500 1.667 20.353 1.520 S10 Lens 5.2748 0.3344 1.762 S11 Sixth 6.8735 0.8484 1.546 56.114 2.052 S12 Lens 7.4933 0.0591 2.641 S13 Seventh 2.0337 0.8836 1.536 55.656 3.070 S14 Lens 1.8436 0.3048 3.425 S15 Filter Infinity 0.2100 1.518 64.197 3.764 S16 Infinity 0.6441 3.825 S17 Imaging Infinity 0.0150 4.134 Plane

TABLE 58 K A B C D E F G H J S1 −0.1061 −0.0082 0.0469 −0.0925 0.0811 −0.0129 −0.032 0.0224 −0.0047 0 S2 −36.188 −0.0502 0.1624 −0.4029 0.6931 −0.7643 0.5021 −0.1789 0.0264 0 S3 0.0036 −0.0795 0.2057 −0.548 1.0742 −1.291 0.9097 −0.3412 0.052 0 S4 0.4038 −0.0325 0.0884 −0.3009 0.7004 −0.9194 0.6738 −0.2424 0.0308 0 S5 51.758 0.0055 −0.1746 0.5018 −0.9395 1.1442 −0.9144 0.4407 −0.0937 0 S6 42.164 0.0953 −0.4992 1.0397 −1.2284 0.8169 −0.2802 0.0384 4E−06 0 S7 −4.7579 0.1185 −0.4938 0.8554 −0.8643 0.5167 −0.185 0.0417 −0.0054 0 S8 −3.4393 0.0492 −0.194 0.3147 −0.3773 0.3249 −0.1878 0.063 −0.0088 0 S9 −8.5449 −0.0638 0.0289 −0.0884 0.1649 −0.171 0.0983 −0.0306 0.0041 0 S10 −18.064 −0.0543 −0.0172 0.0321 −0.0179 0.004   5E−06 −0.0001   8E−06 0 S11 −4.6497 0.0535 −0.0909 0.0613 −0.0311 0.011 −0.0026 0.0004 −2E−05 0 S12 −50 0.0103 −0.0176 0.0057 −0.0015 0.0003 −4E−05   2E−06 −6E−08 0 S13 −2.606 −0.1177 0.0192 −0.0004 −1E−04 −1E−05   4E−06 −4E−07   9E−09 0 S14 −1.0102 −0.0979 0.0187 −0.0024 0.0001   2E−05 −6E−06   6E−07 −3E−08 6E−10

Table 59 below shows an overall focal length f of the optical imaging system, an overall length TTL of the optical imaging system (a distance from the object-side surface of the first lens to the imaging plane), a distance SL from the stop to the imaging plane, an f-number (F No.) of the optical imaging system (the overall focal length f of the optical imaging system divided by the diameter of an entrance pupil of the optical imaging system, where both f and the diameter of the entrance pupil are expressed in mm), an image height (IMG HT) on the imaging plane (one-half of a diagonal length of the imaging plane), and a field of view (FOV) of the optical imaging system for each of Examples 1-29 described herein. The values of f, TTL, SL, and IMG HT are expressed in mm. The values of F No. are dimensionless values. The values of FOV are expressed in degrees.

TABLE 59 Example f TTL SL F No. IMG HT FOV 1 4.315 5.290 4.472 1.560 3.552 77.300 2 4.350 5.300 4.481 1.570 3.552 76.800 3 4.255 5.190 3.921 1.573 3.700 80.420 4 4.256 5.190 3.931 1.581 3.680 80.218 5 3.950 4.819 3.650 1.581 3.250 77.470 6 4.350 5.300 4.917 1.580 3.384 79.580 7 4.845 5.898 5.492 1.583 4.100 79.369 8 4.000 4.877 4.542 1.583 3.400 79.600 9 4.280 5.100 4.369 1.710 3.535 77.840 10 4.200 5.400 4.663 1.590 3.261 74.640 11 4.200 5.084 4.386 1.680 3.261 74.380 12 4.401 5.300 4.142 1.690 3.728 79.310 13 4.544 5.500 4.423 1.672 3.728 77.539 14 4.537 5.500 4.270 1.569 3.728 77.565 15 4.904 6.000 4.728 1.690 4.128 78.902 16 4.485 5.118 4.181 2.039 3.528 75.705 17 4.100 5.078 4.395 1.667 3.528 80.082 18 4.447 5.144 4.894 2.072 3.528 75.627 19 4.400 5.200 1.808 3.261 72.552 20 3.994 5.125 4.484 1.572 3.261 77.383 21 4.300 5.240 4.320 1.610 3.528 77.300 22 4.880 5.850 4.949 1.750 3.928 77.650 23 4.005 4.940 3.889 1.580 3.226 76.500 24 4.588 5.617 4.489 1.687 3.728 76.901 25 4.592 5.478 4.515 1.793 3.728 76.896 26 4.316 5.250 4.393 1.691 3.728 80.429 27 4.302 5.240 4.368 1.955 3.728 80.465 28 4.966 5.993 5.127 2.365 4.128 78.448 29 4.667 5.797 4.893 1.845 4.128 81.802

Table 60 below shows in mm a focal length f1 of the first lens, a focal length f2 of the second lens, a focal length f3 of the third lens, a focal length f4 of the fourth lens, a focal length f5 of the fifth lens, a focal length f6 of the sixth lens, and a focal length f7 of the seventh lens for each of Examples 1-29 described herein.

TABLE 60 Example f1 f2 f3 f4 f5 f6 f7 1 4.057 −11.047 44.073 −31.550 −17.744 2.228 −2.041 2 4.153 −10.514 28.261 −94.905 −11.399 2.479 −2.249 3 8.932 4.711 −6.777 19892528.4 77.074 −24.683 130.031 4 9.060 4.692 −7.025 −4861.622 80.126 −24.191 1985.391 5 8.409 4.355 −6.520 −4512.292 74.369 −22.452 1842.731 6 −64.233 3.248 −7.428 −43.722 52.425 3.010 −2.424 7 −46.596 3.508 −8.211 −52.702 71.136 3.182 −2.550 8 −38.470 2.897 −6.779 −43.510 58.729 2.627 −2.105 9 3.596 −7.349 −1245.24 15.657 −19.723 2.662 −2.171 10 3.663 −8.220 −63.703 14.514 −18.059 1.769 −1.522 11 3.561 −7.379 −263.403 16.328 −22.391 2.448 −2.021 12 9.952 4.985 −9.042 −60.959 28.461 −19.130 −36.205 13 13.419 5.627 −8.921 16.142 −36.758 29.873 −12.281 14 17.012 4.996 −9.034 25.753 24.302 −79.899 −10.773 15 18.920 5.318 −9.395 26.032 18.807 −15.873 −20.906 16 3.552 −7.067 10.578 1000.000 −23.269 1000.000 −8.582 17 4.020 −8.716 26.108 32.282 −395.467 3.389 −2.399 18 3.626 −6.978 10.551 125.381 −28.155 −367.720 −9.031 19 4.290 −10.606 30.978 14.871 −21.133 3.784 −2.465 20 5.677 −73.551 −122.716 15.510 207.375 3.799 −2.466 21 3.850 −10.370 −54.950 10.920 −17.450 −800.000 −18.250 22 4.310 −10.500 −378.000 14.670 −27.270 −800.290 −16.650 23 5.018 11.636 −8.168 −18.768 18.132 2.601 −2.226 24 14.270 5.487 −9.006 21.072 −18.204 43.002 92.362 25 3.971 −11.857 −77.132 19.846 −30.042 −18.041 68.790 26 4.207 −10.331 27.631 107.648 4.166 7.509 −2.062 27 3.620 −10.428 39.821 −38.762 4.342 10.303 −2.323 28 3.802 −8.955 64.595 12384.769 −17.503 299.093 57.797 29 4.499 −15.674 39.058 453.779 −18.160 102.612 59.134

Table 61 below shows in mm a thickness (DedgeT) of an edge of the first lens, a thickness (L2edgeT) of the edge of the second lens, a thickness (L3edgeT) of the edge of the third lens, a thickness (L4edgeT) of the edge of the fourth lens, a thickness (L5edgeT) of the edge of the fifth lens, a thickness (L6edgeT) of the edge of the sixth lens, and a thickness (L7edgeT) of the edge of the seventh lens for each of Examples 1-29 described herein.

TABLE 61 Example L1edgeT L2edgeT L3edgeT L4edgeT L5edgeT L6edgeT L7edgeT  1 0.2261 0.3046 0.2322 0.2803 0.2612 0.2245 0.6182  2 0.2481 0.3137 0.2323 0.2894 0.2593 0.2451 0.6517  3 0.2315 0.2623 0.3336 0.1934 0.2699 0.2877 0.2975  4 0.2512 0.2788 0.3703 0.2108 0.2935 0.3430 0.3409  5 0.2507 0.2797 0.3593 0.2185 0.2930 0.3556 0.3637  6 0.2200 0.2700 0.3480 0.2240 0.2590 0.2690 0.4370  7 0.2344 0.3011 0.3949 0.2542 0.2880 0.2674 0.4630  8 0.1933 0.2486 0.3260 0.2096 0.2383 0.2223 0.3832  9 0.2216 0.3773 0.2347 0.2401 0.1894 0.2600 0.3234 10 0.1667 0.3301 0.1771 0.3798 0.4552 0.2615 0.8402 11 0.1890 0.3659 0.2631 0.3002 0.1921 0.2609 0.3687 12 0.2568 0.2552 0.3401 0.2756 0.3650 0.3065 0.2776 13 0.2497 0.2500 0.4399 0.2704 0.3183 0.6519 0.2941 14 0.2582 0.2578 0.4040 0.2530 0.4107 0.2818 0.4636 15 0.3048 0.3134 0.3843 0.3204 0.5597 0.3103 0.6858 16 0.2646 0.2941 0.2300 0.2434 0.4111 0.5608 0.2207 17 0.2240 0.4062 0.2206 0.2750 0.2232 0.4286 0.4392 18 0.2688 0.3078 0.1901 0.2300 0.4099 0.7139 0.3000 19 0.2048 0.4069 0.2010 0.3332 0.2778 0.3483 0.8151 20 0.2180 0.3468 0.2110 0.2593 0.2768 0.2512 0.9497 21 0.1600 0.2400 0.2200 0.1500 0.2800 0.6000 0.8200 22 0.1100 0.3400 0.1400 0.5500 0.2300 0.5300 0.8000 23 0.2320 0.2180 0.3500 0.2220 0.2410 0.3730 0.3970 24 0.2502 0.3421 0.3843 0.4086 0.2945 0.7273 0.2827 25 0.2499 0.2747 0.2768 0.2502 0.3366 0.4792 0.7821 26 0.2501 0.3506 0.2323 0.3110 0.3641 0.3267 0.3719 27 0.2520 0.2935 0.2377 0.3745 0.2580 0.4152 0.6857 28 0.2927 0.2979 0.2516 0.2513 0.4092 0.7155 0.6778 29 0.2463 0.2800 0.2542 0.2728 0.3562 0.6300 0.6917

Table 62 below shows in mm a sag value (L5S1 sag) of the object-side surface of the fifth lens, a sag value (L5S2 sag) of the image-side surface of the fifth lens, a thickness (Yc71P1) of the seventh lens at a first inflection point on the object-side surface of the seventh lens, a thickness (Yc71P2) of the seventh lens at a second inflection point on the object-side surface of the seventh lens, a thickness (Yc72P1) of the seventh lens at a first inflection point on the image-side surface of the seventh lens, and a thickness (Yc72P2) of the seventh lens at a second inflection point on the image-side surface of the seventh lens for each of Examples 1-29 described herein.

TABLE 62 Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 Yc72P2  1 −0.315 −0.357 1.0890 — 0.9010 —  2 −0.387 −0.422 1.0800 — 0.8010 —  3 0.201 0.235 0.5540 0.6550 0.9000 —  4 0.120 0.146 0.6000 0.7030 0.7020 —  5 0.153 0.181 0.6100 0.7120 0.7190 —  6 0.115 0.139 0.9300 — 0.8110 —  7 0.148 0.156 1.0370 — 0.9200 —  8 0.107 0.117 0.8550 — 0.7520 —  9 −0.466 −0.526 2.9330 — 4.1420 — 10 −0.480 −0.548 3.1780 — 4.4010 — 11 −0.473 −0.542 2.9730 — 4.1760 — 12 0.210 0.245 0.5690 0.6410 0.6700 — 13 0.185 0.267 0.5270 0.4850 0.6470 — 14 0.150 0.089 0.5070 0.7380 0.6370 — 15 0.139 0.060 0.6360 0.9480 0.8120 — 16 −0.300 −0.269 0.5710 0.2830 0.6950 — 17 −0.475 −0.489 0.9050 — 1.0990 — 18 −0.261 −0.263 0.4730 — 0.6310 — 19 −0.485 −0.407 0.8900 — 0.9200 — 20 −0.479 −0.422 — — 0.7810 — 21 −0.420 −0.430 0.7900 — 1.2600 — 22 −0.470 −0.460 0.9200 2.9200 1.5400 — 23 −0.341 −0.540 0.8247 — 0.7357 — 24 0.221 0.318 0.5700 0.4520 0.6330 — 25 0.270 0.286 0.8890 — 1.0150 — 26 0.495 0.733 — — 0.7340 — 27 0.276 0.509 — — 0.9680 — 28 0.092 0.103 0.9550 1.1030 1.1280 — 29 0.179 0.173 0.9640 1.1140 1.1300 —

Table 63 below shows in mm an inner diameter of each of the first to seventh spacers for each of Examples 1-29 described herein. S1d is an inner diameter of the first spacer SP1, S2d is an inner diameter of the second spacer SP2, S3d is an inner diameter of the third spacer SP3, S4d is an inner diameter of the fourth spacer SP4, S5d is an inner diameter of the fifth spacer SP5, S6d is an inner diameter of the sixth spacer SP6, and S7d is an inner diameter of the seventh spacer SP7.

TABLE 63 Example S1d S2d S3d S4d S5d S6d S7d  1 2.5200 2.2000 2.4700 2.9300 3.6400 5.3300 —  2 2.5000 2.2200 2.5100 2.9300 3.6200 5.2700 —  3 1.3300 1.2600 0.9600 1.4400 1.9400 2.6000 —  4 1.0300 1.2500 1.3300 1.5500 1.9700 2.7200 —  5 1.3300 1.2200 1.2000 1.5800 2.0500 2.6900 —  6 1.3400 1.2300 1.0300 1.5000 1.9800 2.6600 —  7 1.4900 1.3900 1.1600 1.5700 2.2200 3.0100 —  8 1.2600 1.1800 0.9400 1.4100 1.8500 2.4600 —  9 2.3100 2.1600 2.5400 2.9400 4.0600 4.8400 5.1200 10 2.4800 2.2400 2.4500 2.8500 3.6300 4.2300 4.6300 11 2.3700 2.2000 2.5400 2.8000 3.8500 4.5300 — 12 2.5800 2.4000 2.4900 2.9700 4.1600 4.8900 5.5100 13 2.6500 2.4600 2.3900 2.9000 3.8000 5.1500 — 14 2.8100 2.6300 2.6500 3.1200 4.0300 4.9100 — 15 2.8100 2.6100 2.7600 3.5400 3.4900 4.4800 5.5600 16 2.0600 2.0066 2.0518 2.1700 2.8294 5.1896 — 17 2.2800 2.2660 2.5420 3.0620 3.7780 5.3880 — 18 2.1200 2.1000 2.0400 2.1200 2.8100 4.6400 — 19 2.3200 2.3600 2.5600 2.9300 3.7000 4.3500 — 20 2.4100 2.3000 2.6600 3.0300 3.7600 — — 21 2.5400 2.0700 2.2500 2.7300 3.4300 4.7600 — 22 2.6000 2.2200 2.3300 3.4000 4.0600 5.7800 — 23 2.4200 2.2300 2.0900 2.4700 3.2000 4.3300 — 24 2.6700 2.5000 2.4400 2.9900 3.8000 5.2700 — 25 2.3900 2.0900 2.2400 2.6500 3.6200 4.7800 5.0800 26 2.3300 2.2700 2.5300 3.1700 4.5200 5.3100 5.6400 27 2.0600 1.8900 2.1500 2.7000 3.6100 4.5600 4.8400 28 1.8900 1.8400 2.3300 2.7300 3.7300 5.4300 6.0300 29 2.3900 2.1500 2.4000 2.8200 3.9400 5.6800 6.0200

Table 64 below shows in mm³ a volume of each of the first to seventh lenses for each of Examples 1-29 described herein. L1v is a volume of the first lens, L2v is a volume of the second lens, L3v is a volume of the third lens, L4v is a volume of the fourth lens, L5v is a volume of the fifth lens, L6v is a volume of the sixth lens, and L7v is a volume of the seventh lens.

TABLE 64 Example L1v L2v L3v L4v L5v L6v L7v  1 6.1771 4.5153 5.2418 5.8649 8.7918 11.0804 30.7452  2 6.8768 4.5411 5.8181 7.3058 9.3011 11.5552 30.6758  3 4.9183 5.6902 6.3612 5.0504 8.1470 10.2679 16.4786  4 5.8603 6.3021 6.9428 5.2341 8.7815 12.6345 19.5310  5 7.0682 7.9121 8.1876 6.5500 7.9904 12.9994 20.4874  6 5.7249 8.0179 8.3774 7.9589 10.3434 11.1031 27.1511  7 6.6434 9.2110 9.8183 9.3359 12.3271 12.8708 35.6574  8 4.1150 5.6874 5.8917 5.7534 5.8804 7.1804 20.6852  9 5.2342 5.0595 5.1455 4.1402 5.9856 8.1378 19.6812 10 4.6744 3.8900 3.3927 7.1987 10.8334 7.7991 27.5125 11 4.9948 4.9046 5.5099 5.7792 5.5464 6.8781 20.2909 12 5.6390 4.8580 6.6748 7.1627 11.0369 11.9357 27.1217 13 5.1650 5.3015 6.2461 7.0472 12.2503 19.1335 17.9152 14 6.0930 6.3798 6.8569 7.4035 9.7509 11.7344 23.4758 15 6.6748 6.8642 6.8777 7.2519 19.6689 17.9721 36.9665 16 4.0401 4.0246 4.2696 5.6315 10.9386 25.3939 15.0485 17 4.4216 5.1184 5.7758 6.6016 7.4237 23.2413 23.4858 18 3.8115 4.6714 4.0552 5.0631 11.2844 25.7618 16.5646 19 4.2347 5.5368 5.5931 7.5471 9.4202 8.9992 27.3258 20 4.6529 4.6572 6.2312 6.7131 10.2673 11.7401 33.5372 21 5.3453 4.8501 6.6014 7.5548 9.1229 28.4121 35.9231 22 5.0785 6.6058 4.3125 19.2075 9.2578 28.9974 38.7541 23 4.3198 3.6956 4.1821 5.1874 8.1714 10.5471 19.1646 24 5.0360 6.7314 5.9764 9.3728 10.4859 21.6926 17.1978 25 5.1465 4.5089 4.4695 4.8122 8.9386 18.2117 35.9358 26 5.5446 5.0525 4.5199 5.6552 9.8279 14.9067 22.4415 27 3.8100 3.9751 3.9272 6.1885 7.5160 13.0347 31.8586 28 4.7517 4.3655 6.4562 5.0723 9.8674 36.8705 47.4701 29 5.6273 4.9490 5.1423 5.0791 9.3624 31.5832 47.9081

Table 65 below shows in mg a weight of each of the first to seventh lenses for each of Examples 1-29 described herein. L1w is a weight of the first lens, L2w is a weight of the second lens, L3w is a weight of the third lens, L4w is a weight of the fourth lens, L5w is a weight of the fifth lens, L6w is a weight of the sixth lens, and L7w is a weight of the seventh lens.

TABLE 65 Example L1w L2w L3w L4w L5w L6w L7w  1 6.4242 5.5538 5.4515 7.2138 10.9898 11.5236 31.9750  2 7.1519 5.5856 6.0508 8.9861 11.6264 12.0174 31.9028  3 5.1150 5.9178 7.9515 6.3130 8.4729 12.8349 16.6434  4 6.0947 6.5542 8.6785 6.5426 9.1328 15.7931 19.7263  5 7.3509 8.2286 10.2345 8.1875 8.3100 16.2493 20.6923  6 5.9539 8.3386 10.4718 9.7099 12.6189 11.5472 28.2371  7 6.9091 9.5794 12.2729 11.3898 15.0391 13.3856 37.0837  8 4.2796 5.9149 7.3646 7.0191 7.1741 7.4676 21.5126  9 5.4436 6.2232 5.3513 4.3058 7.3623 8.4633 20.4684 10 4.8614 4.7847 3.5284 7.4866 13.3251 8.1111 28.6130 11 5.1946 6.0327 5.7303 6.0104 6.8221 7.1532 21.1025 12 5.8646 5.0523 8.3435 8.9534 11.4784 14.9196 27.3929 13 5.3716 5.5136 7.8076 7.3291 15.3129 19.8988 18.6318 14 6.3367 6.6350 8.5711 7.6996 10.1409 14.6680 24.4148 15 6.9418 7.1388 8.5971 7.5420 20.4557 22.4651 38.4452 16 4.2017 4.9503 5.2516 5.8568 13.5639 31.4884 15.1990 17 4.5985 6.2956 7.1042 6.8657 9.2054 28.8192 23.7207 18 3.9640 5.7458 4.2174 5.2656 14.1055 26.7923 17.2272 19 4.4041 6.8103 5.8168 7.8490 11.5868 9.3592 28.4188 20 4.8390 5.7284 6.4804 6.9816 12.6288 12.2097 34.8787 21 5.5591 5.9656 8.1197 7.8570 11.4036 35.5151 36.2823 22 5.2816 8.1251 5.3044 19.9758 11.5723 36.2468 39.1416 23 4.4926 3.8434 5.1440 5.3949 10.2143 10.9690 19.9312 24 5.2374 7.0007 7.4705 9.7477 13.1074 22.5603 17.8857 25 5.3524 5.5459 5.4975 5.0047 11.1733 22.7646 36.2952 26 5.7664 6.3156 4.7007 7.0690 10.2210 15.5030 23.3392 27 3.9624 4.8894 4.0843 7.6119 7.8166 13.5561 33.1329 28 4.9418 5.3696 6.7144 5.2752 12.3343 38.3453 47.9448 29 5.8524 6.0873 5.3480 5.2823 11.5158 32.8465 48.3872

Table 66 below shows in mm an overall outer diameter (including a rib) of each of the first to seventh lenses for each of Examples 1-29 described herein. L1TR is an overall outer diameter of the first lens, L2TR is an overall outer diameter of the second lens, L3TR is an overall outer diameter of the third lens, L4TR is an overall outer diameter of the fourth lens, L5TR is an overall outer diameter of the fifth lens, L6TR is an overall outer diameter of the sixth lens, and L7TR is an overall outer diameter of the seventh lens.

TABLE 66 Example L1TR L2TR L3TR L4TR L5TR L6TR L7TR  1 4.2200 4.4200 4.7200 5.5200 6.2400 6.6400 6.8400  2 4.3600 4.5600 4.8600 5.5600 6.1800 6.5800 6.7800  3 3.1300 3.0000 2.7500 2.4900 2.3700 2.2300 2.1500  4 2.1500 2.2500 2.3800 2.5100 2.7500 3.1200 3.2500  5 2.2800 2.4000 2.5300 2.6300 2.7800 3.1500 3.2500  6 2.4600 2.5800 2.6900 2.8000 3.1700 3.3100 3.4700  7 2.3700 2.5100 2.7300 2.8900 3.2100 3.4400 3.6500  8 2.0600 2.1900 2.3000 2.3600 2.5200 2.8300 3.0800  9 4.2200 4.4200 4.5400 4.7200 5.4000 5.7400 6.3000 10 3.9900 4.1500 4.3500 4.5800 5.1000 5.5600 6.1800 11 4.2100 4.4100 4.5400 4.8000 4.9700 5.6000 5.9900 12 4.2100 4.3000 4.4400 4.8400 5.4700 6.1200 6.9000 13 4.1900 4.2800 4.4100 4.8100 5.5100 6.1600 6.5200 14 4.4300 4.5200 4.6600 5.0600 5.5000 6.2600 6.5700 15 4.4800 4.5700 4.7000 5.0300 6.6600 7.1900 7.4300 16 3.9810 4.2374 4.5202 5.1810 5.9018 6.3010 6.5010 17 4.0740 4.2560 4.8340 5.4220 6.0680 6.5960 6.7860 18 3.5100 3.8100 4.3900 4.9800 5.8500 6.1500 6.2500 19 3.9300 4.1300 4.7100 6.1700 5.3000 6.5700 6.6700 20 4.0300 4.2300 4.8100 5.4000 6.2700 6.6700 6.7700 21 4.3200 4.5100 5.0900 5.6800 6.5600 6.9600 7.1600 22 4.4500 4.6500 5.2200 5.8100 6.6900 7.0900 7.2900 23 3.9300 4.1300 4.3300 4.9300 5.4200 5.8200 6.0200 24 4.2500 4.3400 4.4800 4.8800 5.5100 6.3300 6.7000 25 4.1000 4.1900 4.3200 4.7200 5.3500 6.1700 7.0300 26 4.1100 4.2000 4.3400 4.6120 5.5500 6.3500 7.2100 27 3.7300 3.8200 3.9600 4.3900 4.9600 6.0000 6.8600 28 3.9700 4.0600 4.1900 4.6300 5.2000 7.1500 8.0200 29 4.3900 4.4800 4.6100 5.0400 5.6100 7.0900 7.9500

Table 67 below shows in mm a thickness of a flat portion of the rib of each of the first to seventh lenses for each of Examples 1-29 described herein. L1rt is a thickness of a flat portion of the rib of the first lens, L2rt is a thickness of a flat portion of the rib of the second lens, L3rt is a thickness of a flat portion of the rib of the third lens, L4rt is a thickness of a flat portion of the rib of the fourth lens, L5rt is a thickness of a flat portion of the rib of the fifth lens, L6rt is a thickness of a flat portion of the rib of the sixth lens, and L7rt is a thickness of a flat portion of the rib of the seventh lens.

TABLE 67 Example L1rt L2rt L3rt L4rt L5rt L6rt L7rt  1 0.4850 0.3750 0.3100 0.2100 0.2950 0.3350 0.6850  2 0.5350 0.3550 0.3300 0.2300 0.3250 0.3900 0.7000  3 0.5100 0.4600 0.4800 0.2700 0.4000 0.3200 0.3600  4 0.5900 0.4800 0.5000 0.3000 0.4700 0.3900 0.3600  5 0.6000 0.5400 0.5400 0.4400 0.2500 0.3800 0.4200  6 0.3900 0.4400 0.4700 0.3600 0.4200 0.3800 0.4700  7 0.6000 0.5100 0.5500 0.4200 0.4900 0.3400 0.5400  8 0.5100 0.4400 0.4600 0.4100 0.3100 0.2900 0.4500  9 0.4350 0.4300 0.3600 0.2150 0.3200 0.3300 0.4050 10 0.3800 0.2800 0.2100 0.4600 0.5200 0.3900 0.8800 11 0.4200 0.4200 0.3800 0.4000 0.2900 0.3300 0.5400 12 0.5500 0.3800 0.5800 0.4100 0.5000 0.3200 0.5300 13 0.5200 0.4200 0.5200 0.4100 0.6100 0.7000 0.3700 14 0.5600 0.4300 0.5600 0.5100 0.4000 0.3500 0.5500 15 0.5800 0.4600 0.5500 0.3300 0.6000 0.4800 0.7300 16 0.3720 0.4304 0.2292 0.2843 0.4170 0.6831 0.2615 17 0.4060 0.4930 0.3760 0.2810 0.3160 0.5010 0.4550 18 0.4820 0.3950 0.3160 0.3280 0.4220 0.8850 0.4090 19 0.4310 0.5560 0.3610 0.4290 0.3800 0.3800 0.6670 20 0.4310 0.4570 0.3610 0.3640 0.3800 0.3340 0.7290 21 0.4310 0.4080 0.2790 0.3690 0.2520 0.6740 0.7980 22 0.4310 0.4930 0.2550 0.8210 0.2520 0.6750 0.8860 23 0.4400 0.3300 0.3000 0.2600 0.4250 0.5000 0.5180 24 0.4800 0.4900 0.4800 0.5000 0.4700 0.8300 0.3200 25 0.4600 0.4000 0.3900 0.2600 0.4300 0.5400 0.8300 26 0.5100 0.4500 0.3400 0.4300 0.4100 0.4100 0.4200 27 0.4000 0.4200 0.3700 0.5000 0.3200 0.4600 0.7200 28 0.4700 0.4100 0.4500 0.4100 0.4700 0.9300 0.7000 29 0.4400 0.3900 0.4000 0.4000 0.3800 0.7400 0.7200

Table 68 below shows, for each of Examples 1-29 described herein, dimensionless values of each of the ratio L1w/L7w in Conditional Expressions 1 and 6, the ratio S6d/f in Conditional Expressions 2 and 7, the ratio L1TR/L7TR in Conditional Expressions 3 and 8, the ratio L1234TRavg/L7TR in Conditional Expressions 4 and 9, and the ratio L12345TRavg/L7TR in Conditional Expressions 5 and 10. The dimensionless value of each of these ratios is obtained by dividing two values expressed in a same unit of measurement.

TABLE 68 Example L1w/L7w S6d/f L1TR/L7TR L1234TRavg/L7TR L12345TRavg/L7TR 1 0.2009 1.2352 0.6170 0.6901 0.7345 2 0.2242 1.2115 0.6431 0.7131 0.7528 3 0.3073 0.6549 1.4558 1.3221 1.2781 4 0.3090 0.6392 0.6615 0.7146 0.7409 5 0.3552 0.6320 0.7015 0.7569 0.7766 6 0.2109 0.6115 0.7089 0.7586 0.7896 7 0.1863 0.6213 0.6493 0.7192 0.7512 8 0.1989 0.6150 0.6688 0.7232 0.7422 9 0.2660 1.1308 0.6698 0.7103 0.7397 10 0.1699 1.0071 0.6456 0.6905 0.7175 11 0.2462 1.0786 0.7028 0.7496 0.7656 12 0.2141 1.1111 0.6101 0.6446 0.6742 13 0.2883 1.1334 0.6426 0.6783 0.7117 14 0.2595 1.0822 0.6743 0.7104 0.7358 15 0.1806 0.9135 0.6030 0.6319 0.6848 16 0.2764 1.1571 0.6124 0.6891 0.7329 17 0.1939 1.3141 0.6004 0.6847 0.7266 18 0.2301 1.0434 0.5616 0.6676 0.7213 19 0.1550 0.9886 0.5892 0.7099 0.7268 20 0.1387 0.5953 0.6821 0.7309 21 0.1532 1.1070 0.6034 0.6844 0.7307 22 0.1349 1.1844 0.6104 0.6903 0.7358 23 0.2254 1.0811 0.6528 0.7193 0.7555 24 0.2928 1.1486 0.6343 0.6698 0.7003 25 0.1475 1.0409 0.5832 0.6163 0.6452 26 0.2471 1.2303 0.5700 0.5985 0.6328 27 0.1196 1.0600 0.5437 0.5794 0.6082 28 0.1031 1.0934 0.4950 0.5252 0.5499 29 0.1209 1.2171 0.5522 0.5824 0.6070

FIGS. 59 and 60 are cross-sectional views illustrating examples of an optical imaging system and a lens barrel coupled to each other.

The examples of an optical imaging system 100 described in this application may include a self-alignment structure as illustrated in FIGS. 59 and 60.

In one example illustrated in FIG. 59, the optical imaging system 100 includes a self-alignment structure in which optical axes of four consecutive lenses 1000, 2000, 3000, and 4000 are aligned with an optical axis of the optical imaging system 100 by coupling the four lenses 1000, 2000, 3000, and 4000 to one another.

The first lens 1000 disposed closest to an object side of the optical imaging system 100 is disposed in contact with an inner surface of a lens barrel 200 to align the optical axis of the first lens 1000 with the optical axis of the optical imaging system 100, the second lens 2000 is coupled to the first lens 1000 to align the optical axis of the second lens 2000 with the optical axis of the optical imaging system 100, the third lens 3000 is coupled to the second lens 2000 to align the optical axis of the third lens 3000 with the optical axis of the optical imaging system 100, and the fourth lens 4000 is coupled to the third lens 3000 to align the optical axis of the fourth lens 4000 with the optical axis of the optical imaging system 100. The second lens 2000 to the fourth lens 4000 may not be disposed in contact with the inner surface of the lens barrel 200.

Although FIG. 59 illustrates that the first lens 1000 to the fourth lens 4000 are coupled to one another, the four consecutive lenses that are coupled to one another may be changed to the second lens 2000 to a fifth lens 5000, the third lens 3000 to a sixth lens 6000, or the fourth lens 4000 to a seventh lens 7000.

In another example illustrated in FIG. 60, the optical imaging system 100 includes a self-alignment structure in which optical axes of five consecutive lenses 1000, 2000, 3000, 4000, and 5000 are aligned with an optical axis of the optical imaging system 100 by coupling the five lenses 1000, 2000, 3000, 4000, and 5000 to one another.

The first lens 1000 disposed closest to an object side of the optical imaging system 100 is disposed in contact with an inner surface of the lens barrel 200 to align an optical axis of the first lens 1000 with the optical axis of the optical imaging system 100, the second lens 2000 is coupled to the first lens 1000 to align the optical axis of the second lens 2000 with the optical axis of the optical imaging system 100, the third lens 3000 is coupled to the second lens 2000 to align the optical axis of the third lens 3000 with the optical axis of the optical imaging system 100, the fourth lens 4000 is coupled to the third lens 3000 to align the optical axis of the fourth lens 4000 with the optical axis of the optical imaging system 100, and the fifth lens 5000 is coupled to the fourth lens 4000 to align the optical axis of the fifth lens 5000 with the optical axis of the optical imaging system 100. The second lens 2000 to the fifth lens 5000 may not be disposed in contact with the inner surface of the lens barrel 200.

Although FIG. 60 illustrates that the first lens 1000 to the fifth lens 5000 are coupled to one another, the five consecutive lenses that are coupled to one another may be changed to the second lens 2000 to a sixth lens 6000, or the third lens 3000 to a seventh lens 7000.

FIG. 61 is a cross-sectional view illustrating an example of a seventh lens.

FIG. 61 illustrates the overall outer diameter (L7TR) of the seventh lens, the thickness (L7rt) of the flat portion of the rib of the seventh lens, the thickness (L7edgeT) of the edge of the seventh lens, the thickness (Yc71P1) of the seventh lens at the first inflection point on the object-side surface of the seventh lens, the thickness (Yc71P2) of the seventh lens at the second inflection point on the object-side surface of the seventh lens, and the thickness (Yc72P1) of the seventh lens at the first inflection point of the image-side surface of the seventh lens. Although not shown in FIG. 61, the seventh lens may also have a second inflection point on the image-side surface of the seventh lens, and a thickness of the seventh lens at this inflection point is Yc72P2 as listed in the heading of Table 62.

FIG. 62 is a cross-sectional view illustrating an example of a shape of a rib of a lens.

The examples of the optical imaging system 100 described in this application may include a structure for preventing a flare phenomenon and reflection.

For example, the ribs of the first to seventh lenses 1000, 2000, 3000, 4000, 5000, 6000, and 7000 of the optical imaging system may be partially surface-treated to make the surface of the rib rough as shown in FIG. 62. Methods of surface treatment may include chemical etching, physical grinding, or any other surface treatment method capable of increasing a roughness of a surface.

A surface-treated area EA may be formed in an entire area from an edge of the optical portion of the lens through which light actually passes to an outer end of the rib. However, as illustrated in FIG. 62, non-treated areas NEA including step portions E11, E21, and E22 may not be surface-treated, or may be surface-treated to have a roughness less than a roughness of the surface-treated area EA. The step portions E11, E21, and E22 are portions where the thickness of the rib abruptly changes. A width G1 of a first non-treated area NEA formed on an object-side surface of the lens and including a first step portion E11 may be different from a width G2 of a second non-treated area NEA formed on an image-side surface of the lens and including a second step portion E21 and a third step portion E22. In the example illustrated in FIG. 62, G1 is greater than G2.

The width G1 of the first non-treated area NEA includes the first step portion E11, the second step portion E21, and the third step portion E22 when viewed in an optical axis direction, and the width G2 of the second non-treated area NEA includes the second step portion E21 and the third step portion E22 but not the first step portion E1 l when viewed in the optical axis direction. A distance G4 from the outer end of the rib to the second step portion E21 is smaller than a distance G3 from the outer end of the rib to the first step portion E11. Also, a distance G5 from the outer end of the rib to the third step portion E22 is smaller than the distance G3 from the outer end of the rib to the first step portion E11.

The positions at which the non-treated areas NEA and the step portions E11, E21, and E22 are formed as described above may be advantageous for measuring a concentricity of the lens.

The examples described above enable the optical imaging system to be miniaturized and aberrations to be easily corrected.

While this disclosure includes specific examples, it will be apparent after an understanding of the disclosure of this application that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure. 

What is claimed is:
 1. An optical imaging system comprising: a first lens comprising a positive refractive power, a convex object-side surface, and a concave image-side surface; a second lens comprising a negative refractive power, a convex object-side surface, and a concave image-side surface; a third lens comprising a positive refractive power, a convex object-side surface, and a concave image-side surface; a fourth lens comprising a refractive power, a convex object-side surface, and a concave image-side surface; a fifth lens comprising a negative refractive power; a sixth lens comprising a positive refractive power, a convex object-side surface, and a convex image-side surface; and a seventh lens comprising a negative refractive power, a concave object-side surface, and a concave image-side surface, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system.
 2. The optical imaging system of claim 1, wherein the fourth lens comprises a positive refractive power.
 3. The optical imaging system of claim 1, wherein the fifth lens comprises a convex object-side surface and a concave image-side surface.
 4. The optical imaging system of claim 1, wherein a distance along the optical axis from an object-side surface of the first lens to the imaging plane is 6 mm or less.
 5. The optical imaging system of claim 1, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the sixth lens.
 6. The optical imaging system of claim 1, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the seventh lens.
 7. The optical imaging system of claim 1, wherein the optical imaging system satisfies 0.5<L1234TRavg/L7TR<0.9, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, L7TR is an overall outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in a same unit of measurement.
 8. The optical imaging system of claim 1, further comprising a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, f is the overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.
 9. The optical imaging system of claim 1, wherein the optical imaging system satisfies 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens, and L1TR and L7TR are expressed in a same unit of measurement.
 10. The optical imaging system of claim 1, wherein the optical imaging system satisfies 0.5<L1234TRavg/L7TR<0.75.
 11. The optical imaging system of claim 1, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, and L12345TRavg and L7TR are expressed in a same unit of measurement.
 12. An optical imaging system comprising: a first lens comprising a positive refractive power, a convex object-side surface, and a concave image-side surface; a second lens comprising a refractive power and a convex object-side surface; a third lens comprising a negative refractive power, a convex object-side surface, and a concave image-side surface; a fourth lens comprising a positive refractive power; a fifth lens comprising a refractive power; a sixth lens comprising a refractive power and a convex object-side surface; and a seventh lens comprising a refractive power and a concave image-side surface, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system.
 13. The optical imaging system of claim 12, wherein the second lens comprises a negative refractive power, wherein the fifth lens comprises a negative refractive power, wherein the sixth lens comprises a positive refractive power, and wherein the seventh lens comprises a negative refractive power.
 14. The optical imaging system of claim 12, wherein the second lens comprises a concave image-side surface, and wherein the fourth lens comprises a convex object-side surface.
 15. The optical imaging system of claim 12, wherein the fourth lens comprises a convex image-side surface, wherein the fifth lens comprises a convex object-side surface and a concave image-side surface, and wherein the sixth lens comprises a concave image-side surface.
 16. The optical imaging system of claim 12, wherein the seventh lens comprises a concave object-side surface.
 17. The optical imaging system of claim 12, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the sixth lens.
 18. The optical imaging system of claim 12, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the seventh lens.
 19. The optical imaging system of claim 12, wherein the optical imaging system satisfies 0.5<L1234TRavg/L7TR<0.9, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, L7TR is an overall outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in a same unit of measurement.
 20. The optical imaging system of claim 12, further comprising a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, f is the overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.
 21. The optical imaging system of claim 12, wherein the optical imaging system satisfies 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens, and L1TR and L7TR are expressed in a same unit of measurement.
 22. The optical imaging system of claim 12, wherein the optical imaging system satisfies 0.5<L1234TRavg/L7TR<0.75.
 23. The optical imaging system of claim 12, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, and L12345TRavg and L7TR are expressed in a same unit of measurement.
 24. An optical imaging system comprising: a first lens comprising a refractive power; a second lens comprising refractive power and a convex object-side surface; a third lens comprising a refractive power; a fourth lens comprising a refractive power; a fifth lens comprising a refractive power; a sixth lens comprising a refractive power and a convex object-side surface; and a seventh lens comprising a refractive power and a concave image-side surface, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, and wherein the optical imaging system further satisfies 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens, and L1TR and L7TR are expressed in a same unit of measurement.
 25. The optical imaging system of claim 24, wherein the third lens comprises a positive refractive power, wherein the fourth lens comprises a negative refractive power, wherein the fifth lens comprises a negative refractive power, wherein the sixth lens comprises a positive refractive power, and wherein the seventh lens comprises a negative refractive power.
 26. The optical imaging system of claim 24, wherein the second lens comprises a positive refractive power, and wherein the fourth lens comprises a negative refractive power.
 27. The optical imaging system of claim 24, wherein the first lens comprises a negative refractive power, wherein the second lens comprises a positive refractive power, wherein the fourth lens comprises a negative refractive power, wherein the sixth lens comprises a positive refractive power, and wherein the seventh lens comprises a negative refractive power.
 28. The optical imaging system of claim 24, wherein the second lens comprises a concave image-side surface, wherein the third lens comprises a convex object-side surface, and wherein the sixth lens comprises a convex image-side surface.
 29. The optical imaging system of claim 24, wherein the third lens comprises a convex object-side surface, wherein the fourth lens comprises a concave object-side surface and a convex image-side surface, and wherein the seventh lens comprises a convex object-side surface.
 30. The optical imaging system of claim 24, wherein the second lens comprises a concave image-side surface, and wherein the third lens comprises a convex image-side surface, and wherein the seventh lens comprises a convex object-side surface.
 31. The optical imaging system of claim 24, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the sixth lens.
 32. The optical imaging system of claim 24, wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the seventh lens. 